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Oval|Natural|GIA

1.51ct D SI2 Oval Natural Diamond

EX • D/SI2 • GIA 7551878141

Certificate GIA 7551878141

Diamond specifications and retailer prices

From $4,468 USD
As of October 24, 2026
Save $3,631 USD (45%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $8,099 USD at Wholesale Diamonds Direct · As of October 23, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural oval diamond

This 1.51ct natural oval 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 stated by the retailer rather than the lab and certified by GIA 7551878141. Listed at 11 retailers as of October 23, 2026, with prices from $4,468 to $8,099, a $3,631 spread on the same certified stone. Wholesale Diamonds Direct lists it at $8,099. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle39.34°
Pavilion angle39.99°
OriginNatural
Grading LabGIA
CertificateGIA 7551878141
Dimensions8.91 × 6.40 × 4.02 mm
L/W Ratio1.39
Culet sizeNone
Top View
8.91 mm6.40 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 7551878141
Side View
Table 58.0%Crown 39.34°Girdle: STK-THKPavilion 39.99°Culet: NoneDepth 62.9%

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 24
Current: $5,683 USD|Low: $4,468 USD|High: $8,827 USD|Avg: $5,844 USD|-5.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Wholesale Diamonds Direct
October 24, 2026
Retailer 2$4,468 USD
Retailer 4$4,496 USD
Retailer 5$4,570 USD
Retailer 3$4,675 USD
Retailer 10$4,820 USD
Retailer 7$4,963 USD
Retailer 6$5,539 USD
Retailer 8$5,542 USD
Retailer 1$5,683 USD
Retailer 9$7,617 USD
Wholesale Diamonds Direct$8,099 USD

38 data points across 11 retailers

11 retailers$4,468 USD to $8,099 USD

A
Cheapest Retailer
-
$4,468 USD
A
Retailer 2
-
$4,496 USD
SGD 6,076 SGD
View
A
Retailer 3
-
$4,570 USD
View
A
Retailer 4
-
$4,675 USD
View
A
Retailer 5
-
$4,820 USD
SGD 6,513 SGD
View
A
Retailer 6
-
$4,963 USD
£3,908 GBP
View
A
Retailer 7
-
$5,539 USD
View
A
Retailer 8
-
$5,542 USD
View
A
Retailer 9
-
$5,683 USD
€5,412 EUR
View
B+
Retailer 10
-
$7,617 USD
View
Most Expensive
B+
Wholesale Diamonds Direct
465835342 · Oct 23
$8,099 USD
View
10 more retailers have this diamond
Prices start from $4,468 USDSave up to $3,631 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 Oval
$4,468 USD