Oval|Natural|GIA

1.51ct D SI2 Oval Natural Diamond

VG • D/SI2 • GIA 6515380729

Certificate GIA 6515380729

Diamond specifications and retailer prices

From $8,509 SGD
$6,656 USD
As of October 30, 2026
Save $6,580 SGD (44%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $18,013 SGD at NZ Jewellers · As of October 20, 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6515380729. Listed at 26 retailers as of October 29, 2026, with a 77% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
D
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle41.62°
Pavilion angle38.67°
OriginNatural
Grading LabGIA
CertificateGIA 6515380729
Dimensions8.90 × 6.29 × 3.98 mm
L/W Ratio1.41
Top View
8.90 mm6.29 mm1.51 ctD / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6515380729
Side View
Table 56.0%Crown 41.62°Girdle: MED-THKPavilion 38.67°Culet: NoneDepth 63.2%

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: $11,768 SGD|Low: $8,559 SGD|High: $15,190 SGD|Avg: $11,445 SGD|+2.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 7$8,559 SGD
Retailer 8$9,005 SGD
Retailer 6$9,006 SGD
Retailer 3$10,145 SGD
Retailer 2$10,179 SGD
Retailer 1$11,768 SGD
Retailer 5$14,872 SGD
Retailer 4$15,089 SGD

38 data points across 8 retailers

26 retailers$8,509 SGD to $15,089 SGD

A
Cheapest Retailer
-
$8,509 SGD
$6,656 USD
A
Retailer 2
-
$8,559 SGD
$6,695 USD
View
A
Retailer 3
-
$9,005 SGD
$7,044 USD
View
Final sale: no returns
A
Retailer 4
-
$9,006 SGD
$7,045 USD
View
Retailer 5
-
$9,006 SGD
$7,045 USD
View
Price last confirmed 15 days ago
A
Retailer 6
-
$9,082 SGD
$7,104 USD
View
B+
Retailer 7
-
$9,592 SGD
$7,503 USD
View
Retailer 8
-
$9,757 SGD
$7,632 USD
View
Price last confirmed 23 days ago
Retailer 9
-
$9,757 SGD
$7,632 USD
View
Price last confirmed 9 days ago
Retailer 10
-
$9,757 SGD
$7,632 USD
View
Price last confirmed 40 days ago
Retailer 11
-
$9,908 SGD
$7,750 USD
View
Price last confirmed 31 days ago
B+
Retailer 12
-
$10,145 SGD
£6,249 GBP
View
B+
Retailer 13
-
$10,179 SGD
£6,269 GBP
View
B+
Retailer 14
-
$10,355 SGD
$8,100 USD
View
B+
Retailer 15
-
$10,355 SGD
$8,100 USD
View
B+
Retailer 16
-
$10,700 SGD
$8,370 USD
View
Retailer 17
-
$11,258 SGD
$8,806 USD
View
Price last confirmed 22 days ago
Retailer 18
-
$11,258 SGD
$8,806 USD
View
Price last confirmed 40 days ago
Retailer 19
-
$11,258 SGD
$8,806 USD
View
Price last confirmed 10 days ago
B+
Retailer 20
-
$11,258 SGD
$8,806 USD
View
B+
Retailer 21
-
$11,768 SGD
€8,767 EUR
View
B
Retailer 22
-
$14,872 SGD
£9,160 GBP
View
B
Retailer 23
-
$15,089 SGD
£9,294 GBP
View
Retailer 24
-
$18,013 SGD
$14,090 USD
View
Price last confirmed 31 days ago
Retailer 25
-
$18,013 SGD
$14,090 USD
View
Price last confirmed 40 days ago
Most Expensive
NZ Jewellers
1433cd66-f0c9-4862-879f-4bd631812f65 · Oct 20
$18,013 SGD
$14,090 USD
View
Price last confirmed 10 days ago
25 more retailers have this diamond
Prices start from $8,509 SGDSave up to $6,580 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
$8,509 SGD