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Round|Natural|GIA

1.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6555735876

Certificate GIA 6555735876

Diamond specifications and retailer prices

From $7,854 SGD
HK$48,000 HKD
As of November 1, 2026
Save $9,996 SGD (56%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $17,850 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round 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 and certified by GIA 6555735876. Listed at 20 retailers as of October 30, 2026, with prices from $7,854 to $17,850, a $9,996 spread on the same certified stone. NZ Jewellers lists it at $17,850. 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6555735876
Dimensions7.25 × 7.29 × 4.55 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
7.25 mm7.29 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555735876
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.6%

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: Nov 1
Current: $17,850 SGD|Low: $7,789 SGD|High: $17,850 SGD|Avg: $10,942 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
November 2, 2026
Retailer 16$7,854 SGD
Retailer 7$8,432 SGD
Retailer 9$8,923 SGD
Retailer 5$8,926 SGD
Retailer 18$8,930 SGD
Retailer 3$9,669 SGD
Retailer 8$9,818 SGD
Retailer 13$10,006 SGD
Retailer 17$10,235 SGD
Retailer 12$10,623 SGD
Retailer 4$10,662 SGD
Retailer 10$10,662 SGD
Retailer 19$11,020 SGD
Retailer 6$11,157 SGD
Retailer 11$11,756 SGD
Retailer 2$11,827 SGD
Retailer 15$13,112 SGD
Retailer 14$14,874 SGD
NZ Jewellers$17,850 SGD

35 data points across 19 retailers

20 retailers$7,854 SGD to $17,850 SGD

B+
Cheapest Retailer
-
$7,854 SGD
HK$48,000 HKD
B+
Retailer 2
-
$8,019 SGD
A$9,650 AUD
View
B+
Retailer 3
-
$8,432 SGD
$6,596 USD
View
B+
Retailer 4
-
$8,923 SGD
$6,980 USD
View
Final sale: no returns
B+
Retailer 5
-
$8,926 SGD
$6,982 USD
View
B+
Retailer 6
-
$8,930 SGD
$6,985 USD
View
B
Retailer 7
-
$9,669 SGD
$7,563 USD
View
B+
Retailer 8
-
$9,818 SGD
$7,680 USD
View
B+
Retailer 9
-
$10,006 SGD
£6,163 GBP
View
Retailer 10
-
$10,235 SGD
A$12,317 AUD
View
Price last confirmed 11 days ago
B+
Retailer 11
-
$10,623 SGD
€7,914 EUR
View
B
Retailer 12
-
$10,662 SGD
$8,340 USD
View
B
Retailer 13
-
$10,662 SGD
$8,340 USD
View
B
Retailer 14
-
$11,020 SGD
$8,620 USD
View
B
Retailer 15
-
$11,157 SGD
$8,727 USD
View
Retailer 16
-
$11,756 SGD
$9,196 USD
View
Price last confirmed 10 days ago
B
Retailer 17
-
$11,827 SGD
£7,284 GBP
View
B
Retailer 18
-
$13,112 SGD
ZAR 165,691 ZAR
View
B
Retailer 19
-
$14,874 SGD
£9,161 GBP
View
Most Expensive
B
NZ Jewellers
709b4404-daec-4c0b-b654-fb474c7a1d60 · Oct 30
$17,850 SGD
$13,963 USD
View
19 more retailers have this diamond
Prices start from $7,854 SGDSave up to $9,996 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 Round
$7,854 SGD