Oval|Natural|GIA

1.51ct E SI1 Oval Natural Diamond

ID • E/SI1 • GIA 6531137674

Certificate GIA 6531137674

Diamond specifications and retailer prices

From $10,569 SGD
$8,267 USD
As of October 30, 2026
Save $7,085 SGD (40%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $18,814 SGD at NZ Jewellers · As of September 28, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6531137674. Listed at 19 retailers as of October 26, 2026, with a 67% 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
E
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.6°
Pavilion angle37.3°
OriginNatural
Grading LabGIA
CertificateGIA 6531137674
Dimensions8.77 × 6.46 × 4.11 mm
L/W Ratio1.36
Top View
8.77 mm6.46 mm1.51 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6531137674
Side View
Table 57.0%Crown 38.6°Girdle: STK-THKPavilion 37.3°Culet: NoneDepth 63.6%

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: Oct 30
Current: $12,344 SGD|Low: $10,010 SGD|High: $17,843 SGD|Avg: $12,530 SGD|+0.1%
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
October 30, 2026
Retailer 10$10,010 SGD
Retailer 5$10,422 SGD
Retailer 14$10,569 SGD
Retailer 13$11,205 SGD
Retailer 11$11,288 SGD
Retailer 6$11,383 SGD
Retailer 12$12,229 SGD
Retailer 1$12,344 SGD
Retailer 8$12,403 SGD
Retailer 2$13,257 SGD
Retailer 3$13,257 SGD
Retailer 4$13,704 SGD
Retailer 9$16,291 SGD
Retailer 7$17,653 SGD

42 data points across 14 retailers

19 retailers$10,569 SGD to $17,653 SGD

Retailer 1
-
$10,010 SGD
$7,830 USD
Price last confirmed 9 days ago
B+
Retailer 2
-
$10,569 SGD
$8,267 USD
View
B+
Retailer 3
-
$11,205 SGD
$8,765 USD
View
B+
Retailer 4
-
$11,288 SGD
$8,830 USD
View
Final sale: no returns
B+
Retailer 5
-
$11,288 SGD
$8,830 USD
View
B+
Retailer 6
-
$11,383 SGD
$8,904 USD
View
B+
Retailer 7
-
$12,035 SGD
$9,414 USD
View
Retailer 8
-
$12,229 SGD
$9,566 USD
View
Price last confirmed 31 days ago
B+
Retailer 9
-
$12,229 SGD
$9,566 USD
View
B+
Retailer 10
-
$12,344 SGD
£7,603 GBP
View
B+
Retailer 11
-
$12,403 SGD
A$14,926 AUD
View
B+
Retailer 12
-
$13,138 SGD
$10,277 USD
View
B+
Retailer 13
-
$13,257 SGD
$10,370 USD
View
B+
Retailer 14
-
$13,257 SGD
$10,370 USD
View
B+
Retailer 15
-
$13,704 SGD
$10,720 USD
View
Retailer 16
-
$14,111 SGD
$11,038 USD
View
Price last confirmed 31 days ago
Retailer 17
-
$16,291 SGD
ZAR 205,864 ZAR
View
Price last confirmed 8 days ago
B
Retailer 18
-
$17,653 SGD
£10,873 GBP
View
Most Expensive
NZ Jewellers
00c0aeb9-6e00-439a-b006-4463ad937dc4 · Sep 28
$18,814 SGD
$14,717 USD
View
Price last confirmed 32 days ago
18 more retailers have this diamond
Prices start from $10,569 SGDSave up to $7,085 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
$10,569 SGD