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Oval|Natural|GIA

1.51ct D SI2 Oval Natural Diamond

EX • D/SI2 • GIA 6525797508

Certificate GIA 6525797508

Diamond specifications and retailer prices

From $7,208 SGD
$5,638 USD
As of October 28, 2026
Save $5,295 SGD (42%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $14,119 SGD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

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 6525797508. Listed at 16 retailers as of October 28, 2026, with a 73% 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
FluorescenceNone
Crown angle37.83°
Pavilion angle40.38°
OriginNatural
Grading LabGIA
CertificateGIA 6525797508
Dimensions8.88 × 6.35 × 4.11 mm
L/W Ratio1.40
Top View
8.88 mm6.35 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6525797508
Side View
Table 59.0%Crown 37.83°Girdle: STK-THKPavilion 40.38°Culet: NoneDepth 64.7%

Caratlytics Score

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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 28
Current: $8,097 SGD|Low: $7,142 SGD|High: $12,588 SGD|Avg: $8,420 SGD|+1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 8$7,208 SGD
Retailer 5$7,319 SGD
Retailer 6$7,362 SGD
Retailer 7$7,792 SGD
Retailer 9$7,792 SGD
Retailer 3$7,978 SGD
Retailer 1$8,097 SGD
Retailer 2$9,223 SGD
Retailer 4$12,503 SGD

42 data points across 9 retailers

16 retailers$7,208 SGD to $12,503 SGD

A
Cheapest Retailer
-
$7,208 SGD
$5,638 USD
A
Retailer 2
-
$7,319 SGD
$5,725 USD
View
A
Retailer 3
-
$7,362 SGD
$5,759 USD
View
A
Retailer 4
-
$7,792 SGD
$6,095 USD
View
Final sale: no returns
Retailer 5
-
$7,792 SGD
$6,095 USD
View
Price last confirmed 23 days ago
A
Retailer 6
-
$7,978 SGD
£4,914 GBP
View
A
Retailer 7
-
$8,097 SGD
£4,987 GBP
View
Retailer 8
-
$8,441 SGD
$6,603 USD
View
Price last confirmed 38 days ago
Retailer 9
-
$8,441 SGD
$6,603 USD
View
Price last confirmed 23 days ago
Retailer 10
-
$8,572 SGD
$6,705 USD
View
Price last confirmed 31 days ago
A
Retailer 11
-
$9,223 SGD
€6,871 EUR
View
Retailer 12
-
$9,740 SGD
$7,619 USD
View
Price last confirmed 39 days ago
Retailer 13
-
$9,740 SGD
$7,619 USD
View
Price last confirmed 21 days ago
B+
Retailer 14
-
$12,503 SGD
£7,701 GBP
View
Retailer 15
-
$14,119 SGD
$11,044 USD
View
Price last confirmed 35 days ago
Most Expensive
NZ Jewellers
c6a2ddb8-3355-498d-8c6d-da67c61f5cfe · Sep 30
$14,119 SGD
$11,044 USD
View
Price last confirmed 30 days ago
15 more retailers have this diamond
Prices start from $7,208 SGDSave up to $5,295 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
$7,208 SGD