CaratHunter
Plans
Oval|Natural|GIA

1.51ct G SI1 Oval Natural Diamond

EX • G/SI1 • GIA 6555496656

Certificate GIA 6555496656

Diamond specifications and retailer prices

From $9,819 SGD
$7,678 USD
As of November 1, 2026
Save $10,594 SGD (52%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $20,414 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 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 6555496656. Listed at 21 retailers as of October 30, 2026, with prices from $9,819 to $20,414, a $10,594 spread on the same certified stone. NZ Jewellers lists it at $20,414. 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
SymmetryVery Good
FluorescenceNone
Crown angle37.5°
Pavilion angle37.7°
OriginNatural
Grading LabGIA
CertificateGIA 6555496656
Dimensions9.18 × 6.40 × 4.01 mm
L/W Ratio1.43
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
9.18 mm6.40 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555496656
Side View
Table 62.0%Crown 37.5°Girdle: THN-THKPavilion 37.7°Culet: NoneDepth 62.5%

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: $20,414 SGD|Low: $9,937 SGD|High: $20,414 SGD|Avg: $12,696 SGD
NZ Jewellers
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
November 2, 2026
Retailer 15$9,937 SGD
Retailer 3$10,302 SGD
Retailer 7$10,973 SGD
Retailer 4$11,266 SGD
Retailer 11$11,266 SGD
Retailer 14$11,272 SGD
Retailer 2$11,300 SGD
Retailer 5$11,640 SGD
Retailer 13$12,205 SGD
Retailer 12$12,393 SGD
Retailer 6$12,607 SGD
Retailer 10$14,083 SGD
Retailer 9$14,995 SGD
Retailer 8$17,010 SGD
NZ Jewellers$20,414 SGD

46 data points across 15 retailers

21 retailers$9,819 SGD to $20,414 SGD

B+
Cheapest Retailer
-
$9,819 SGD
$7,678 USD
B+
Retailer 2
-
$9,937 SGD
$7,770 USD
View
B+
Retailer 3
-
$10,302 SGD
View
B+
Retailer 4
-
$10,548 SGD
$8,248 USD
View
B
Retailer 5
-
$10,973 SGD
$8,580 USD
View
B
Retailer 6
-
$11,184 SGD
$8,745 USD
View
B+
Retailer 7
-
$11,266 SGD
$8,809 USD
View
Final sale: no returns
B+
Retailer 8
-
$11,266 SGD
$8,809 USD
View
Retailer 9
-
$11,272 SGD
A$13,560 AUD
View
Price last confirmed 9 days ago
B+
Retailer 10
-
$11,300 SGD
£6,957 GBP
View
B
Retailer 11
-
$12,038 SGD
$9,412 USD
View
B
Retailer 12
-
$12,205 SGD
$9,543 USD
View
Retailer 13
-
$12,205 SGD
$9,543 USD
View
Price last confirmed 7 days ago
B
Retailer 14
-
$12,393 SGD
$9,690 USD
View
B
Retailer 15
-
$12,478 SGD
$9,757 USD
View
B
Retailer 16
-
$12,607 SGD
$9,858 USD
View
Retailer 17
-
$14,083 SGD
$11,012 USD
View
Price last confirmed 62 days ago
B
Retailer 18
-
$14,083 SGD
$11,012 USD
View
B
Retailer 19
-
$14,995 SGD
ZAR 189,411 ZAR
View
B
Retailer 20
-
$17,010 SGD
£10,473 GBP
View
Most Expensive
B
NZ Jewellers
5d7088cb-e287-4cbf-91e0-5155794ec581 · Oct 30
$20,414 SGD
$15,962 USD
View
20 more retailers have this diamond
Prices start from $9,819 SGDSave up to $10,594 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
$9,819 SGD