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Round|Natural|GIA

1.51ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 6392613089

Certificate GIA 6392613089

Diamond specifications and retailer prices

From $10,560 USD
As of October 25, 2026
Save $10,180 USD (49%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $20,740 USD at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6392613089. Listed at 18 retailers as of October 25, 2026, with prices from $10,560 to $20,740, a $10,180 spread on the same certified stone. Diamond Quarter lists it at $20,740. 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
D
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6392613089
Dimensions7.34 × 7.29 × 4.55 mm
L/W Ratio1.01
Top View
7.34 mm7.29 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6392613089
Side View
Table 59.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 62.2%

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: Oct 25
Current: $12,838 USD|Low: $9,958 USD|High: $18,889 USD|Avg: $13,562 USD|-0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 4$10,560 USD
Retailer 5$11,950 USD
Retailer 1$12,838 USD
Retailer 6$12,946 USD
Retailer 2$14,464 USD
Retailer 3$18,763 USD

42 data points across 6 retailers

18 retailers$10,560 USD to $20,740 USD

B+
Cheapest Retailer
-
$10,560 USD
B+
Retailer 2
-
$10,903 USD
View
B+
Retailer 3
-
$11,087 USD
View
B+
Retailer 4
-
$11,253 USD
CA$15,630 CAD
View
B+
Retailer 5
-
$11,950 USD
View
B+
Retailer 6
-
$11,950 USD
View
Final sale: no returns
B+
Retailer 7
-
$12,838 USD
£10,109 GBP
View
B
Retailer 8
-
$12,946 USD
View
B
Retailer 9
-
$13,145 USD
View
B
Retailer 10
-
$13,820 USD
View
B
Retailer 11
-
$13,820 USD
View
B
Retailer 12
-
$13,835 USD
View
B
Retailer 13
-
$14,280 USD
View
B
Retailer 14
-
$14,464 USD
€13,775 EUR
View
B
Retailer 15
-
$14,938 USD
View
B
Retailer 16
-
$18,763 USD
£14,774 GBP
View
B
Retailer 17
-
$19,917 USD
View
Most Expensive
B
Diamond Quarter
1.51SI2D638976D1N · Oct 29
$20,740 USD
£16,331 GBP
View
17 more retailers have this diamond
Prices start from $10,560 USDSave up to $10,180 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.

B+
1.51ct Round
$10,560 USD