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Oval|Natural|GIA

1.51ct K SI1 Oval Natural Diamond

GD • K/SI1 • GIA 6375880480

Certificate GIA 6375880480

Diamond specifications and retailer prices

From $5,726 SGD
As of November 6, 2026
Save $5,592 SGD (49%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $11,318 SGD at NZ Jewellers · As of November 5, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6375880480. Listed at 17 retailers as of November 5, 2026, with prices from $5,726 to $11,318, a $5,592 spread on the same certified stone. NZ Jewellers lists it at $11,318. 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
K
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6375880480
Dimensions8.88 × 6.63 × 4.05 mm
L/W Ratio1.34
Top View
8.88 mm6.63 mm1.51 ctK / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6375880480
Side View
Table 60.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 61.1%

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: Nov 6
Current: $6,407 SGD|Low: $5,972 SGD|High: $10,644 SGD|Avg: $7,390 SGD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6$5,972 SGD
Retailer 2$6,006 SGD
Retailer 1$6,407 SGD
Retailer 7$6,767 SGD
Retailer 5$7,655 SGD
Retailer 3$8,256 SGD
Retailer 4$10,490 SGD

40 data points across 7 retailers

17 retailers$5,726 SGD to $11,318 SGD

B+
Cheapest Retailer
-
$5,726 SGD
B+
Retailer 2
-
$5,886 SGD
View
B+
Retailer 3
-
$5,900 SGD
View
Retailer 4
-
$5,972 SGD
View
Price last confirmed 16 days ago
B+
Retailer 5
-
$6,006 SGD
View
B
Retailer 6
-
$6,152 SGD
View
B
Retailer 7
-
$6,350 SGD
View
B
Retailer 8
-
$6,407 SGD
View
Retailer 9
-
$6,767 SGD
View
Price last confirmed 8 days ago
B
Retailer 10
-
$6,767 SGD
View
B
Retailer 11
-
$6,767 SGD
View
B
Retailer 12
-
$6,962 SGD
View
B
Retailer 13
-
$7,655 SGD
View
B
Retailer 14
-
$7,808 SGD
View
B
Retailer 15
-
$8,256 SGD
View
C
Retailer 16
-
$10,490 SGD
View
Most Expensive
C
NZ Jewellers
2ac61b3e-3814-4d03-9bf2-8ef5f5c05a53 · Nov 5
$11,318 SGD
$8,831 USD
View
16 more retailers have this diamond
Prices start from $5,726 SGDSave up to $5,592 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+
1.51ct Oval
$5,726 SGD