CaratHunter
Plans
Oval|Natural|GIA

1.51ct D SI2 Oval Natural Diamond

EX • D/SI2 • GIA 7551878141

Certificate GIA 7551878141

Diamond specifications and retailer prices

From $5,712 SGD
$4,468 USD
As of October 24, 2026
Save $1,553 SGD (21%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $10,354 SGD 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 24, 2026, with a 27% 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
D
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 24
Current: $7,265 SGD|Low: $5,712 SGD|High: $11,285 SGD|Avg: $7,470 SGD|-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$5,712 SGD
Retailer 4$5,748 SGD
Retailer 5$5,843 SGD
Retailer 3$5,977 SGD
Retailer 10$6,161 SGD
Retailer 7$6,345 SGD
Retailer 6$7,081 SGD
Retailer 8$7,085 SGD
Retailer 1$7,265 SGD
Retailer 9$9,738 SGD
Wholesale Diamonds Direct$10,354 SGD

37 data points across 11 retailers

11 retailers$5,712 SGD to $7,265 SGD

A
Cheapest Retailer
-
$5,712 SGD
$4,468 USD
A
Retailer 2
-
$5,748 SGD
View
A
Retailer 3
-
$5,843 SGD
$4,570 USD
View
A
Retailer 4
-
$5,977 SGD
$4,675 USD
View
A
Retailer 5
-
$6,161 SGD
View
A
Retailer 6
-
$6,345 SGD
£3,908 GBP
View
A
Retailer 7
-
$7,081 SGD
$5,539 USD
View
A
Retailer 8
-
$7,085 SGD
$5,542 USD
View
A
Retailer 9
-
$7,265 SGD
€5,412 EUR
View
Retailer 10
-
$9,738 SGD
$7,617 USD
View
Price last confirmed 7 days ago
Most Expensive
Wholesale Diamonds Direct
465835342 · Oct 23
$10,354 SGD
$8,099 USD
View
Price last confirmed 7 days ago
10 more retailers have this diamond
Prices start from $5,712 SGDSave up to $1,553 SGD

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
$5,712 SGD