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Oval|Natural|GIA

1.51ct I SI1 Oval Natural Diamond

VG • I/SI1 • GIA 2427873957

Certificate GIA 2427873957

Diamond specifications and retailer prices

From $7,233 SGD
HK$44,200 HKD
As of November 1, 2026
Save $9,210 SGD (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $16,443 SGD at NZ Jewellers · As of October 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2427873957. Listed at 19 retailers as of October 30, 2026, with prices from $7,233 to $16,443, a $9,210 spread on the same certified stone. NZ Jewellers lists it at $16,443. 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
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2427873957
Dimensions8.59 × 6.30 × 4.02 mm
L/W Ratio1.36
Top View
8.59 mm6.30 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2427873957
Side View
Table 56.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.7%

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 1
Current: $10,739 SGD|Low: $6,891 SGD|High: $13,865 SGD|Avg: $9,787 SGD|+2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 8$7,233 SGD
Retailer 11$7,690 SGD
Retailer 2$8,220 SGD
Retailer 12$8,290 SGD
Retailer 4$8,907 SGD
Retailer 3$9,043 SGD
Retailer 5$9,269 SGD
Retailer 10$9,478 SGD
Retailer 1$10,739 SGD
Retailer 9$10,832 SGD
Retailer 7$12,079 SGD
Retailer 6$13,701 SGD

43 data points across 12 retailers

19 retailers$7,233 SGD to $16,443 SGD

B+
Cheapest Retailer
-
$7,233 SGD
HK$44,200 HKD
B+
Retailer 2
-
$7,690 SGD
$6,015 USD
View
B+
Retailer 3
-
$8,220 SGD
$6,430 USD
View
Final sale: no returns
B+
Retailer 4
-
$8,221 SGD
$6,431 USD
View
B+
Retailer 5
-
$8,289 SGD
$6,484 USD
View
B+
Retailer 6
-
$8,290 SGD
$6,485 USD
View
B
Retailer 7
-
$8,907 SGD
$6,967 USD
View
B
Retailer 8
-
$9,043 SGD
$7,074 USD
View
B
Retailer 9
-
$9,269 SGD
£5,709 GBP
View
Retailer 10
-
$9,478 SGD
A$11,406 AUD
View
Price last confirmed 11 days ago
B
Retailer 11
-
$9,749 SGD
$7,626 USD
View
B
Retailer 12
-
$9,869 SGD
$7,720 USD
View
B
Retailer 13
-
$9,869 SGD
$7,720 USD
View
B
Retailer 14
-
$10,202 SGD
$7,980 USD
View
B
Retailer 15
-
$10,276 SGD
$8,038 USD
View
B
Retailer 16
-
$10,739 SGD
€8,000 EUR
View
B
Retailer 17
-
$12,079 SGD
ZAR 152,636 ZAR
View
B
Retailer 18
-
$13,701 SGD
£8,439 GBP
View
Most Expensive
C
NZ Jewellers
291f68da-725f-4ac0-8c62-3671c641db6a · Oct 30
$16,443 SGD
$12,862 USD
View
18 more retailers have this diamond
Prices start from $7,233 SGDSave up to $9,210 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
$7,233 SGD