Radiant|Natural|GIA

1.51ct G SI1 Radiant Natural Diamond

EX • G/SI1 • GIA 7543765163

Certificate GIA 7543765163

Diamond specifications and retailer prices

From $9,466 NZD
$5,326 USD
As of November 1, 2026
Save $8,761 NZD (48%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $20,037 NZD at NZ Jewellers · As of September 21, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct 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 7543765163. Listed at 25 retailers as of October 28, 2026, with a 93% 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

1.51
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle46.92°
Pavilion angle29.99°
OriginNatural
Grading LabGIA
CertificateGIA 7543765163
Dimensions7.27 × 5.69 × 3.86 mm
L/W Ratio1.28
Girdle conditionVery Thick
Key to symbols
Cloud, Crystal, Feather, Needle, Indented Natural, Natural
Top View
7.27 mm5.69 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7543765163
Side View
Table 63.0%Crown 46.92°Girdle: STK-VTKPavilion 29.99°Culet: NoneDepth 67.7%

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: $11,288 NZD|Low: $9,183 NZD|High: $18,306 NZD|Avg: $12,890 NZD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 10$9,466 NZD
Retailer 9$10,017 NZD
Retailer 2$10,102 NZD
Retailer 11$10,113 NZD
Retailer 1$11,288 NZD
Retailer 5$11,491 NZD
Retailer 3$11,749 NZD
Retailer 4$13,089 NZD
Retailer 7$14,720 NZD
Retailer 6$17,651 NZD
Retailer 8$18,227 NZD

34 data points across 11 retailers

25 retailers$9,466 NZD to $18,227 NZD

A
Cheapest Retailer
-
$9,466 NZD
$5,326 USD
A
Retailer 2
-
$10,017 NZD
$5,636 USD
View
Final sale: no returns
A
Retailer 3
-
$10,102 NZD
$5,684 USD
View
A
Retailer 4
-
$10,113 NZD
$5,690 USD
View
A
Retailer 5
-
$10,701 NZD
$6,021 USD
View
Retailer 6
-
$10,854 NZD
$6,107 USD
View
Price last confirmed 25 days ago
Retailer 7
-
$10,854 NZD
$6,107 USD
View
Price last confirmed 33 days ago
Retailer 8
-
$10,854 NZD
$6,107 USD
View
Price last confirmed 26 days ago
Retailer 9
-
$10,854 NZD
$6,107 USD
View
Price last confirmed 41 days ago
A
Retailer 10
-
$11,288 NZD
£5,001 GBP
View
A
Retailer 11
-
$11,491 NZD
£5,091 GBP
View
B+
Retailer 12
-
$11,624 NZD
$6,540 USD
View
B+
Retailer 13
-
$11,624 NZD
$6,540 USD
View
Retailer 14
-
$11,749 NZD
A$10,170 AUD
View
Price last confirmed 29 days ago
B+
Retailer 15
-
$12,015 NZD
$6,760 USD
View
B+
Retailer 16
-
$12,264 NZD
$6,900 USD
View
Retailer 17
-
$12,523 NZD
$7,046 USD
View
Price last confirmed 41 days ago
Retailer 18
-
$12,523 NZD
$7,046 USD
View
Price last confirmed 24 days ago
B+
Retailer 19
-
$13,089 NZD
€7,014 EUR
View
Retailer 20
-
$13,207 NZD
$7,431 USD
View
Price last confirmed 18 days ago
B+
Retailer 21
-
$14,720 NZD
ZAR 133,799 ZAR
View
B
Retailer 22
-
$17,651 NZD
£7,820 GBP
View
B
Retailer 23
-
$18,227 NZD
£8,075 GBP
View
Retailer 24
-
$20,037 NZD
$11,274 USD
View
Price last confirmed 33 days ago
Most Expensive
NZ Jewellers
e5c15276-5653-4dca-b6f7-b5f55167e23b · Sep 21
$20,037 NZD
$11,274 USD
View
Price last confirmed 42 days ago
24 more retailers have this diamond
Prices start from $9,466 NZDSave up to $8,761 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
1.51ct Radiant
$9,466 NZD