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Oval|Natural|GIA

1.51ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 6521073458

Certificate GIA 6521073458

Diamond specifications and retailer prices

From $8,296 SGD
$6,489 USD
As of October 28, 2026
Save $9,266 SGD (53%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $17,561 SGD at NZ Jewellers · As of October 27, 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 H 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 6521073458. Listed at 25 retailers as of October 27, 2026, with prices from $8,296 to $17,561, a $9,266 spread on the same certified stone. NZ Jewellers lists it at $17,561. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.88°
Pavilion angle39.48°
OriginNatural
Grading LabGIA
CertificateGIA 6521073458
Dimensions9.06 × 6.44 × 3.96 mm
L/W Ratio1.41
Top View
9.06 mm6.44 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6521073458
Side View
Table 60.0%Crown 36.88°Girdle: MED-THKPavilion 39.48°Culet: NoneDepth 61.5%

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: Oct 28
Current: $17,561 SGD|Low: $8,048 SGD|High: $17,561 SGD|Avg: $10,777 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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 29, 2026
Retailer 7$8,296 SGD
Retailer 11$8,353 SGD
Retailer 6$8,780 SGD
Retailer 19$8,780 SGD
Retailer 8$8,789 SGD
Retailer 9$8,853 SGD
Retailer 10$9,455 SGD
Retailer 17$9,513 SGD
Retailer 18$9,658 SGD
Retailer 2$9,907 SGD
Retailer 12$9,951 SGD
Retailer 4$10,065 SGD
Retailer 5$10,067 SGD
Retailer 3$10,975 SGD
Retailer 14$11,454 SGD
Retailer 16$12,784 SGD
Retailer 15$14,653 SGD
Retailer 13$14,711 SGD
NZ Jewellers$17,561 SGD

28 data points across 19 retailers

25 retailers$8,296 SGD to $17,561 SGD

B+
Cheapest Retailer
-
$8,296 SGD
$6,489 USD
B+
Retailer 2
-
$8,353 SGD
$6,534 USD
View
B+
Retailer 3
-
$8,780 SGD
$6,868 USD
View
B+
Retailer 4
-
$8,780 SGD
$6,868 USD
View
Final sale: no returns
B+
Retailer 5
-
$8,789 SGD
$6,875 USD
View
B+
Retailer 6
-
$8,853 SGD
$6,925 USD
View
Retailer 7
-
$9,350 SGD
$7,314 USD
View
Price last confirmed 8 days ago
B
Retailer 8
-
$9,455 SGD
$7,396 USD
View
B
Retailer 9
-
$9,513 SGD
$7,441 USD
View
B+
Retailer 10
-
$9,658 SGD
$7,555 USD
View
B+
Retailer 11
-
$9,907 SGD
£6,102 GBP
View
B+
Retailer 12
-
$9,951 SGD
£6,129 GBP
View
Retailer 13
-
$10,065 SGD
A$12,112 AUD
View
Price last confirmed 11 days ago
B+
Retailer 14
-
$10,067 SGD
$7,875 USD
View
Retailer 15
-
$10,067 SGD
$7,875 USD
View
Price last confirmed 23 days ago
B+
Retailer 16
-
$10,112 SGD
$7,910 USD
View
B+
Retailer 17
-
$10,112 SGD
$7,910 USD
View
B
Retailer 18
-
$10,457 SGD
$8,180 USD
View
B
Retailer 19
-
$10,600 SGD
$8,292 USD
View
B
Retailer 20
-
$10,975 SGD
$8,585 USD
View
B
Retailer 21
-
$11,454 SGD
€8,533 EUR
View
B
Retailer 22
-
$12,784 SGD
ZAR 161,553 ZAR
View
B
Retailer 23
-
$14,653 SGD
£9,025 GBP
View
B
Retailer 24
-
$14,711 SGD
£9,061 GBP
View
Most Expensive
B
NZ Jewellers
98e39236-a9fd-413f-9a9e-022d36809849 · Oct 27
$17,561 SGD
$13,737 USD
View
24 more retailers have this diamond
Prices start from $8,296 SGDSave up to $9,266 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
$8,296 SGD