Radiant|Natural|GIA

1.51ct G SI1 Radiant Natural Diamond

EX • G/SI1 • GIA 7543765163

Certificate GIA 7543765163

Diamond specifications and retailer prices

From $5,326 USD
As of November 1, 2026
Save $4,929 USD (48%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $11,274 USD 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $6,351 USD|Low: $5,167 USD|High: $10,300 USD|Avg: $7,252 USD|-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$5,326 USD
Retailer 9$5,636 USD
Retailer 2$5,684 USD
Retailer 11$5,690 USD
Retailer 1$6,351 USD
Retailer 5$6,465 USD
Retailer 3$6,611 USD
Retailer 4$7,365 USD
Retailer 7$8,282 USD
Retailer 6$9,931 USD
Retailer 8$10,255 USD

34 data points across 11 retailers

25 retailers$5,326 USD to $10,255 USD

A
Cheapest Retailer
-
$5,326 USD
A
Retailer 2
-
$5,636 USD
View
Final sale: no returns
A
Retailer 3
-
$5,684 USD
View
A
Retailer 4
-
$5,690 USD
View
A
Retailer 5
-
$6,021 USD
View
Retailer 6
-
$6,107 USD
View
Price last confirmed 25 days ago
Retailer 7
-
$6,107 USD
View
Price last confirmed 32 days ago
Retailer 8
-
$6,107 USD
View
Price last confirmed 25 days ago
Retailer 9
-
$6,107 USD
View
Price last confirmed 40 days ago
A
Retailer 10
-
$6,351 USD
£5,001 GBP
View
A
Retailer 11
-
$6,465 USD
£5,091 GBP
View
B+
Retailer 12
-
$6,540 USD
View
B+
Retailer 13
-
$6,540 USD
View
Retailer 14
-
$6,611 USD
A$10,170 AUD
View
Price last confirmed 29 days ago
B+
Retailer 15
-
$6,760 USD
View
B+
Retailer 16
-
$6,900 USD
View
Retailer 17
-
$7,046 USD
View
Price last confirmed 41 days ago
Retailer 18
-
$7,046 USD
View
Price last confirmed 23 days ago
B+
Retailer 19
-
$7,365 USD
€7,014 EUR
View
Retailer 20
-
$7,431 USD
View
Price last confirmed 18 days ago
B+
Retailer 21
-
$8,282 USD
ZAR 133,799 ZAR
View
B
Retailer 22
-
$9,931 USD
£7,820 GBP
View
B
Retailer 23
-
$10,255 USD
£8,075 GBP
View
Retailer 24
-
$11,274 USD
View
Price last confirmed 32 days ago
Most Expensive
NZ Jewellers
e5c15276-5653-4dca-b6f7-b5f55167e23b · Sep 21
$11,274 USD
View
Price last confirmed 41 days ago
24 more retailers have this diamond
Prices start from $5,326 USDSave up to $4,929 USD

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
$5,326 USD