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Oval|Natural|GIA

1.00ct J SI1 Oval Natural Diamond

GD • J/SI1 • GIA 6375818599

Certificate GIA 6375818599

Diamond specifications and retailer prices

From $2,493 SGD
As of November 6, 2026
Save $4,497 SGD (64%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $6,990 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural oval diamond

This 1ct natural oval sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6375818599. Listed at 20 retailers as of November 5, 2026, with prices from $2,493 to $6,990, a $4,497 spread on the same certified stone. NZ Jewellers lists it at $6,990. 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

1.00
Carat
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6375818599
Dimensions8.68 × 5.52 × 3.23 mm
L/W Ratio1.57
Top View
8.68 mm5.52 mm1.00 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6375818599
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 58.6%

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: $4,152 SGD|Low: $2,325 SGD|High: $5,927 SGD|Avg: $3,569 SGD|+2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 6$2,493 SGD
Retailer 9$2,735 SGD
Retailer 8$2,794 SGD
Retailer 7$2,800 SGD
Retailer 2$3,168 SGD
Retailer 3$3,537 SGD
Retailer 10$3,745 SGD
Retailer 4$4,081 SGD
Retailer 1$4,152 SGD
Retailer 5$5,857 SGD

45 data points across 10 retailers

20 retailers$2,493 SGD to $6,990 SGD

B+
Cheapest Retailer
-
$2,493 SGD
B
Retailer 2
-
$2,735 SGD
View
B
Retailer 3
-
$2,794 SGD
View
Final sale: no returns
B
Retailer 4
-
$2,800 SGD
View
B
Retailer 5
-
$2,922 SGD
View
B
Retailer 6
-
$3,025 SGD
View
B
Retailer 7
-
$3,028 SGD
View
Retailer 8
-
$3,028 SGD
View
Price last confirmed 8 days ago
B
Retailer 9
-
$3,168 SGD
View
B
Retailer 10
-
$3,486 SGD
View
B
Retailer 11
-
$3,486 SGD
View
B
Retailer 12
-
$3,495 SGD
View
B
Retailer 13
-
$3,537 SGD
View
B
Retailer 14
-
$3,601 SGD
View
Retailer 15
-
$3,745 SGD
View
Price last confirmed 30 days ago
B
Retailer 16
-
$3,838 SGD
View
B
Retailer 17
-
$4,081 SGD
View
B
Retailer 18
-
$4,152 SGD
View
C
Retailer 19
-
$5,857 SGD
View
Most Expensive
C
NZ Jewellers
e519cd34-a49e-4053-9f6f-69489deec606 · Nov 5
$6,990 SGD
$5,454 USD
View
19 more retailers have this diamond
Prices start from $2,493 SGDSave up to $4,497 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+
1.00ct Oval
$2,493 SGD