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Radiant|Natural|GIA

1.50ct G SI1 Radiant Natural Diamond

EX • G/SI1 • GIA 1555573256

Certificate GIA 1555573256

Diamond specifications and retailer prices

From $8,712 AUD
SGD 8,251 SGD
As of October 31, 2026
Save $11,970 AUD (58%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $20,682 AUD at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 1.5ct natural radiant diamond

This 1.5ct natural radiant sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555573256. Listed at 25 retailers as of October 31, 2026, with prices from $8,712 to $20,682, a $11,970 spread on the same certified stone. 77 Diamonds lists it at $20,682. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555573256
Dimensions7.66 × 5.72 × 3.86 mm
L/W Ratio1.34
Girdle conditionPolished
Culet sizeNone
Key to symbols
Cloud, Feather, Crystal, Needle
Top View
7.66 mm5.72 mm1.50 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555573256
Side View
Table 67.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $20,682 AUD|Low: $7,881 AUD|High: $20,682 AUD|Avg: $11,222 AUD|+116.0%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 2, 2026
Retailer 14$7,881 AUD
Retailer 6$8,712 AUD
Retailer 7$9,158 AUD
Retailer 8$9,730 AUD
Retailer 17$9,921 AUD
Retailer 9$10,074 AUD
Retailer 3$10,762 AUD
Retailer 15$11,448 AUD
Retailer 13$11,489 AUD
Retailer 5$12,044 AUD
Retailer 4$14,695 AUD
Retailer 12$14,814 AUD
Retailer 2$15,746 AUD
Retailer 16$16,593 AUD
Retailer 10$16,670 AUD
Retailer 11$16,778 AUD
77 Diamonds$20,682 AUD

26 data points across 17 retailers

25 retailers$8,712 AUD to $20,682 AUD

Retailer 1
-
$7,379 AUD
HK$40,400 HKD
Price last confirmed 13 days ago
Retailer 2
-
$7,881 AUD
₹525,993 INR
View
Price last confirmed 12 days ago
Retailer 3
-
$8,260 AUD
$5,789 USD
View
Price last confirmed 18 days ago
Retailer 4
-
$8,492 AUD
SGD 8,042 SGD
View
Price last confirmed 19 days ago
A
Retailer 5
-
$8,712 AUD
SGD 8,251 SGD
View
B+
Retailer 6
-
$9,058 AUD
$6,348 USD
View
Retailer 7
-
$9,061 AUD
$6,350 USD
View
Price last confirmed 11 days ago
Retailer 8
-
$9,158 AUD
$6,418 USD
View
Price last confirmed 17 days ago
Retailer 9
-
$9,730 AUD
View
Price last confirmed 29 days ago
Retailer 10
-
$9,921 AUD
$6,953 USD
View
Price last confirmed 13 days ago
Retailer 11
-
$10,074 AUD
$7,060 USD
View
Price last confirmed 16 days ago
B+
Retailer 12
-
$10,108 AUD
View
Retailer 13
-
$10,150 AUD
$7,114 USD
View
Price last confirmed 15 days ago
Retailer 14
-
$10,321 AUD
$7,233 USD
View
Price last confirmed 13 days ago
Retailer 15
-
$11,448 AUD
$8,023 USD
View
Price last confirmed 12 days ago
Retailer 16
-
$12,044 AUD
ZAR 136,357 ZAR
View
Price last confirmed 16 days ago
Retailer 17
-
$12,296 AUD
$8,617 USD
View
Price last confirmed 62 days ago
Retailer 18
-
$14,695 AUD
£8,109 GBP
View
Price last confirmed 12 days ago
Retailer 19
-
$14,814 AUD
£8,175 GBP
View
Price last confirmed 11 days ago
B
Retailer 20
-
$15,746 AUD
$11,035 USD
View
Retailer 21
-
$16,593 AUD
$11,629 USD
View
Price last confirmed 12 days ago
B
Retailer 22
-
$16,670 AUD
$11,683 USD
View
B
Retailer 23
-
$16,778 AUD
$11,759 USD
View
B
Retailer 24
-
$16,899 AUD
View
Most Expensive
C
77 Diamonds
RADZ3QGUKXE8 · Nov 2
$20,682 AUD
£11,413 GBP
View
24 more retailers have this diamond
Prices start from $8,712 AUDSave up to $11,970 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.50ct Radiant
$8,712 AUD