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1.51ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 6511363422

Certificate GIA 6511363422

Diamond specifications and retailer prices

From $5,716 USD
As of October 30, 2026
Save $6,733 USD (54%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $12,449 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6511363422. Listed at 16 retailers as of October 30, 2026, with prices from $5,716 to $12,449, a $6,733 spread on the same certified stone. NZ Jewellers lists it at $12,449. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6511363422
Dimensions7.31 × 7.27 × 4.54 mm
L/W Ratio1.01
Top View
7.31 mm7.27 mm1.51 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6511363422
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.5%

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: Oct 30
Current: $12,449 USD|Low: $5,397 USD|High: $12,449 USD|Avg: $7,726 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 7$5,640 USD
Retailer 8$5,881 USD
Retailer 9$6,223 USD
Retailer 3$6,224 USD
Retailer 11$6,743 USD
Retailer 10$6,847 USD
Retailer 5$6,970 USD
Retailer 2$7,712 USD
Retailer 12$7,780 USD
Retailer 4$8,201 USD
Retailer 6$10,428 USD
NZ Jewellers$12,449 USD

37 data points across 12 retailers

16 retailers$5,716 USD to $12,449 USD

Retailer 1
-
$5,640 USD
Price last confirmed 10 days ago
A
Retailer 2
-
$5,716 USD
View
A
Retailer 3
-
$5,881 USD
View
B+
Retailer 4
-
$6,223 USD
View
Final sale: no returns
A
Retailer 5
-
$6,224 USD
View
B+
Retailer 6
-
$6,743 USD
View
B+
Retailer 7
-
$6,847 USD
View
B+
Retailer 8
-
$6,970 USD
£5,488 GBP
View
B+
Retailer 9
-
$7,360 USD
View
B+
Retailer 10
-
$7,360 USD
View
B+
Retailer 11
-
$7,381 USD
View
B+
Retailer 12
-
$7,610 USD
View
B+
Retailer 13
-
$7,712 USD
€7,345 EUR
View
B+
Retailer 14
-
$7,780 USD
View
B
Retailer 15
-
$10,428 USD
£8,211 GBP
View
Most Expensive
B
NZ Jewellers
674544cd-a763-4487-a622-a750ca9529cc · Oct 30
$12,449 USD
View
15 more retailers have this diamond
Prices start from $5,716 USDSave up to $6,733 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 Round
$5,716 USD