Radiant|Natural|GIA

1.50ct G SI1 Radiant Natural Diamond

EX • G/SI1 • GIA 7558699630

Certificate GIA 7558699630

Diamond specifications and retailer prices

From $12,679 NZD
$7,134 USD
As of November 1, 2026
Save $9,888 NZD (44%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $27,084 NZD at NZ Jewellers · As of September 20, 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 7558699630. Listed at 19 retailers as of November 1, 2026, with a 78% 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
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7558699630
Dimensions7.80 × 5.67 × 3.85 mm
L/W Ratio1.38
Culet sizeNone
Top View
7.80 mm5.67 mm1.50 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7558699630
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 67.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $14,896 NZD|Low: $11,503 NZD|High: $22,840 NZD|Avg: $15,571 NZD
Retailer 1
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
Retailer 18
Retailer 19
Retailer 20
November 2, 2026
Retailer 9$11,653 NZD
Retailer 4$12,679 NZD
Retailer 11$13,484 NZD
Retailer 19$13,507 NZD
Retailer 18$13,541 NZD
Retailer 20$13,541 NZD
Retailer 5$13,655 NZD
Retailer 1$14,896 NZD
Retailer 14$15,104 NZD
Retailer 17$15,244 NZD
Retailer 13$15,737 NZD
Retailer 6$16,102 NZD
Retailer 7$16,102 NZD
Retailer 2$16,208 NZD
Retailer 8$16,636 NZD
Retailer 12$17,688 NZD
Retailer 10$17,773 NZD
Retailer 3$17,832 NZD
Retailer 16$19,894 NZD
Retailer 15$22,567 NZD

26 data points across 20 retailers

19 retailers$12,679 NZD to $22,567 NZD

B+
Cheapest Retailer
-
$12,679 NZD
$7,134 USD
B+
Retailer 2
-
$13,507 NZD
$7,600 USD
View
B+
Retailer 3
-
$13,541 NZD
$7,619 USD
View
Final sale: no returns
Retailer 4
-
$13,541 NZD
$7,619 USD
View
Price last confirmed 21 days ago
B+
Retailer 5
-
$13,655 NZD
$7,683 USD
View
Retailer 6
-
$14,670 NZD
$8,254 USD
View
Price last confirmed 41 days ago
B+
Retailer 7
-
$14,896 NZD
$8,381 USD
View
B+
Retailer 8
-
$15,104 NZD
£6,692 GBP
View
Retailer 9
-
$15,244 NZD
A$13,195 AUD
View
Price last confirmed 11 days ago
B+
Retailer 10
-
$16,102 NZD
$9,060 USD
View
B+
Retailer 11
-
$16,102 NZD
$9,060 USD
View
B+
Retailer 12
-
$16,208 NZD
$9,119 USD
View
B+
Retailer 13
-
$16,636 NZD
$9,360 USD
View
Retailer 14
-
$16,927 NZD
$9,524 USD
View
Price last confirmed 41 days ago
B+
Retailer 15
-
$17,688 NZD
€9,478 EUR
View
Retailer 16
-
$17,832 NZD
$10,033 USD
View
Price last confirmed 10 days ago
B
Retailer 17
-
$19,894 NZD
ZAR 180,831 ZAR
View
B
Retailer 18
-
$22,567 NZD
£9,998 GBP
View
Most Expensive
NZ Jewellers
d798331c-044e-45db-a921-3ff71e24ba35 · Sep 20
$27,084 NZD
$15,239 USD
View
Price last confirmed 42 days ago
18 more retailers have this diamond
Prices start from $12,679 NZDSave up to $9,888 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.

B+
1.50ct Radiant
$12,679 NZD