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Oval|Natural|GIA

1.51ct G SI1 Oval Natural Diamond

EX • G/SI1 • GIA 6542547818

Certificate GIA 6542547818

Diamond specifications and retailer prices

From $6,810 SGD
HK$41,600 HKD
As of November 1, 2026
Save $5,973 SGD (47%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $13,863 SGD at Riddles Jewelry · As of October 25, 2026
View at Riddles Jewelry

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6542547818. Listed at 22 retailers as of November 1, 2026, with a 88% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle39.6°
OriginNatural
Grading LabGIA
CertificateGIA 6542547818
Dimensions8.67 × 6.32 × 4.15 mm
L/W Ratio1.37
Top View
8.67 mm6.32 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6542547818
Side View
Table 58.0%CrownGirdle: THK-VTKPavilion 39.6°Culet: NoneDepth 65.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $9,167 SGD|Low: $6,810 SGD|High: $17,498 SGD|Avg: $10,514 SGD|+21.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Riddles Jewelry
November 2, 2026
Retailer 21$6,810 SGD
Retailer 18$7,246 SGD
Retailer 9$7,428 SGD
Retailer 6$7,659 SGD
Retailer 4$7,671 SGD
Retailer 7$7,703 SGD
Retailer 5$7,840 SGD
Retailer 20$7,926 SGD
Retailer 19$8,006 SGD
Retailer 10$8,137 SGD
Retailer 17$8,459 SGD
Retailer 15$8,642 SGD
Retailer 12$8,795 SGD
Retailer 14$9,093 SGD
Retailer 1$9,167 SGD
Retailer 8$9,892 SGD
Retailer 16$10,019 SGD
Retailer 11$10,364 SGD
Retailer 3$11,269 SGD
Retailer 13$12,031 SGD
Retailer 2$12,782 SGD
Riddles Jewelry$13,863 SGD

26 data points across 22 retailers

22 retailers$6,810 SGD to $12,782 SGD

A
Cheapest Retailer
-
$6,810 SGD
HK$41,600 HKD
A
Retailer 2
-
$7,246 SGD
$5,666 USD
View
A
Retailer 3
-
$7,428 SGD
$5,808 USD
View
A
Retailer 4
-
$7,571 SGD
$5,920 USD
View
A
Retailer 5
-
$7,659 SGD
$5,989 USD
View
A
Retailer 6
-
$7,671 SGD
$5,998 USD
View
Final sale: no returns
A
Retailer 7
-
$7,703 SGD
$6,023 USD
View
A
Retailer 8
-
$7,840 SGD
$6,130 USD
View
B+
Retailer 9
-
$7,926 SGD
A$9,535 AUD
View
A
Retailer 10
-
$8,006 SGD
$6,260 USD
View
B+
Retailer 11
-
$8,137 SGD
$6,363 USD
View
B+
Retailer 12
-
$8,459 SGD
£5,208 GBP
View
B+
Retailer 13
-
$8,642 SGD
£5,321 GBP
View
B+
Retailer 14
-
$8,795 SGD
$6,877 USD
View
B+
Retailer 15
-
$9,167 SGD
€6,826 EUR
View
B+
Retailer 16
-
$9,892 SGD
$7,734 USD
View
Price last confirmed 7 days ago
B+
Retailer 17
-
$10,019 SGD
€7,461 EUR
View
Retailer 18
-
$10,364 SGD
$8,104 USD
View
Price last confirmed 21 days ago
B+
Retailer 19
-
$11,269 SGD
ZAR 142,356 ZAR
View
Retailer 20
-
$12,031 SGD
A$14,473 AUD
View
Price last confirmed 40 days ago
B
Retailer 21
-
$12,782 SGD
£7,870 GBP
View
Most Expensive
Riddles Jewelry
1985031488 · Oct 25
$13,863 SGD
$10,840 USD
View
Price last confirmed 8 days ago
21 more retailers have this diamond
Prices start from $6,810 SGDSave up to $5,973 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
$6,810 SGD