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Radiant|Natural|GIA

1.50ct G SI1 Radiant Natural Diamond

EX • G/SI1 • GIA 2558742615

Certificate GIA 2558742615

Diamond specifications and retailer prices

From $8,281 NZD
HK$36,400 HKD
As of November 1, 2026
Save $9,178 NZD (53%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $18,479 NZD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

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 2558742615. Listed at 21 retailers as of October 28, 2026, with a 111% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 2558742615
Dimensions7.53 × 5.77 × 3.96 mm
L/W Ratio1.31
Girdle conditionPolished
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle, Indented Natural
Top View
7.53 mm5.77 mm1.50 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2558742615
Side View
Table 68.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 68.7%

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: Nov 1
Current: $8,822 NZD|Low: $8,281 NZD|High: $17,538 NZD|Avg: $12,079 NZD|-1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 7$8,281 NZD
Retailer 1$8,822 NZD
Retailer 9$9,697 NZD
Retailer 10$10,196 NZD
Retailer 4$10,599 NZD
Retailer 2$10,980 NZD
Retailer 3$12,070 NZD
Retailer 6$13,575 NZD
Retailer 5$16,279 NZD
Retailer 8$17,459 NZD

32 data points across 10 retailers

21 retailers$8,281 NZD to $17,459 NZD

A
Cheapest Retailer
-
$8,281 NZD
HK$36,400 HKD
A
Retailer 2
-
$8,822 NZD
₹472,755 INR
View
A
Retailer 3
-
$9,219 NZD
$5,187 USD
View
A
Retailer 4
-
$9,450 NZD
SGD 7,185 SGD
View
A
Retailer 5
-
$9,697 NZD
SGD 7,373 SGD
View
A
Retailer 6
-
$10,083 NZD
$5,673 USD
View
A
Retailer 7
-
$10,086 NZD
$5,675 USD
View
A
Retailer 8
-
$10,196 NZD
$5,737 USD
View
Final sale: no returns
A
Retailer 9
-
$10,599 NZD
£4,696 GBP
View
Retailer 10
-
$10,980 NZD
A$9,504 AUD
View
Price last confirmed 29 days ago
Retailer 11
-
$11,048 NZD
$6,216 USD
View
Price last confirmed 17 days ago
Retailer 12
-
$11,048 NZD
$6,216 USD
View
Price last confirmed 16 days ago
Retailer 13
-
$11,048 NZD
$6,216 USD
View
Price last confirmed 15 days ago
B+
Retailer 14
-
$11,328 NZD
$6,374 USD
View
B+
Retailer 15
-
$11,689 NZD
A$10,118 AUD
View
B+
Retailer 16
-
$12,070 NZD
€6,468 EUR
View
Retailer 17
-
$12,749 NZD
$7,173 USD
View
Price last confirmed 14 days ago
B+
Retailer 18
-
$13,575 NZD
ZAR 123,390 ZAR
View
B+
Retailer 19
-
$16,279 NZD
£7,212 GBP
View
B
Retailer 20
-
$17,459 NZD
£7,735 GBP
View
Most Expensive
NZ Jewellers
fe7edb97-4bb4-46b2-ae0e-dfea42feccae · Oct 17
$18,479 NZD
$10,397 USD
View
Price last confirmed 15 days ago
20 more retailers have this diamond
Prices start from $8,281 NZDSave up to $9,178 NZD

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
$8,281 NZD