CaratHunter
Plans
Oval|Natural|GIA

0.51ct D VS1 Oval Natural Diamond

GD • D/VS1 • GIA 1509440320

Certificate GIA 1509440320

Diamond specifications and retailer prices

From $1,432 SGD
$1,120 USD
As of October 28, 2026
Save $1,815 SGD (56%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $4,302 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.51ct natural oval diamond

This 0.51ct natural oval sits in the half to three-quarter carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1509440320. Listed at 23 retailers as of October 28, 2026, with a 127% 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

0.51
Carat
D
Colour
VS1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1509440320
Dimensions6.55 × 4.61 × 2.64 mm
L/W Ratio1.42
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Needle, Feather
Top View
6.55 mm4.61 mm0.51 ctD / VS1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1509440320
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 57.2%

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 28
Current: $1,965 SGD|Low: $1,432 SGD|High: $3,270 SGD|Avg: $2,246 SGD|+4.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 6$1,432 SGD
Retailer 8$1,474 SGD
Retailer 10$1,598 SGD
Retailer 7$1,751 SGD
Retailer 1$1,965 SGD
Retailer 4$2,286 SGD
Retailer 9$2,301 SGD
Retailer 5$2,716 SGD
Retailer 2$3,176 SGD
Retailer 3$3,247 SGD

42 data points across 10 retailers

23 retailers$1,432 SGD to $3,247 SGD

B+
Cheapest Retailer
-
$1,432 SGD
$1,120 USD
B+
Retailer 2
-
$1,474 SGD
$1,153 USD
View
Final sale: no returns
B+
Retailer 3
-
$1,530 SGD
$1,197 USD
View
B+
Retailer 4
-
$1,547 SGD
$1,210 USD
View
B+
Retailer 5
-
$1,569 SGD
$1,227 USD
View
B+
Retailer 6
-
$1,598 SGD
$1,250 USD
View
B+
Retailer 7
-
$1,598 SGD
$1,250 USD
View
B
Retailer 8
-
$1,659 SGD
$1,298 USD
View
B
Retailer 9
-
$1,751 SGD
$1,370 USD
View
B
Retailer 10
-
$1,843 SGD
$1,442 USD
View
B
Retailer 11
-
$1,918 SGD
$1,500 USD
View
B
Retailer 12
-
$1,918 SGD
$1,500 USD
View
B
Retailer 13
-
$1,965 SGD
£1,211 GBP
View
B
Retailer 14
-
$1,982 SGD
$1,550 USD
View
B
Retailer 15
-
$1,999 SGD
$1,564 USD
View
B
Retailer 16
-
$2,214 SGD
$1,732 USD
View
B
Retailer 17
-
$2,286 SGD
€1,703 EUR
View
Retailer 18
-
$2,301 SGD
A$2,769 AUD
View
Price last confirmed 25 days ago
B
Retailer 19
-
$2,716 SGD
ZAR 34,318 ZAR
View
B
Retailer 20
-
$2,879 SGD
CA$3,128 CAD
View
B
Retailer 21
-
$3,176 SGD
£1,956 GBP
View
B
Retailer 22
-
$3,247 SGD
£2,000 GBP
View
Most Expensive
NZ Jewellers
9b8e3c4d-435d-4935-919f-5de14ed1b4db · Oct 30
$4,302 SGD
$3,365 USD
View
Price under review
22 more retailers have this diamond
Prices start from $1,432 SGDSave up to $1,815 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.

B+
0.51ct Oval
$1,432 SGD