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Round|Natural|GIA

1.51ct I SI1 Round Natural Diamond

GD • I/SI1 • GIA 1377240735

Certificate GIA 1377240735

Diamond specifications and retailer prices

From $4,811 SGD
HK$29,400 HKD
As of November 1, 2026
Save $6,035 SGD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $10,846 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by GIA 1377240735. Listed at 18 retailers as of October 30, 2026, with prices from $4,811 to $10,846, a $6,035 spread on the same certified stone. NZ Jewellers lists it at $10,846. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
I
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1377240735
Dimensions7.04 × 6.95 × 4.65 mm
L/W Ratio1.01
Key to symbols
Twinning Wisp, Feather
Top View
7.04 mm6.95 mm1.51 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1377240735
Side View
Table 57.0%CrownGirdle: ThickPavilionCulet: NoneDepth 66.5%

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: $10,846 SGD|Low: $4,238 SGD|High: $10,846 SGD|Avg: $6,288 SGD|+9.0%
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
November 2, 2026
Retailer 15$4,811 SGD
Retailer 6$5,537 SGD
Retailer 4$5,656 SGD
Retailer 17$5,743 SGD
Retailer 5$5,984 SGD
Retailer 7$6,098 SGD
Retailer 10$6,117 SGD
Retailer 2$6,354 SGD
Retailer 3$6,484 SGD
Retailer 8$6,484 SGD
Retailer 9$6,484 SGD
Retailer 12$6,670 SGD
Retailer 18$6,679 SGD
Retailer 11$7,306 SGD
Retailer 16$7,482 SGD
Retailer 14$7,971 SGD
Retailer 13$10,328 SGD
NZ Jewellers$10,846 SGD

27 data points across 18 retailers

18 retailers$4,811 SGD to $10,846 SGD

B+
Cheapest Retailer
-
$4,811 SGD
HK$29,400 HKD
B+
Retailer 2
-
$5,537 SGD
$4,331 USD
View
B+
Retailer 3
-
$5,656 SGD
$4,424 USD
View
B+
Retailer 4
-
$5,743 SGD
$4,492 USD
View
B+
Retailer 5
-
$5,984 SGD
$4,681 USD
View
Final sale: no returns
B+
Retailer 6
-
$6,098 SGD
$4,770 USD
View
B+
Retailer 7
-
$6,117 SGD
View
B+
Retailer 8
-
$6,354 SGD
£3,914 GBP
View
B+
Retailer 9
-
$6,484 SGD
$5,072 USD
View
B+
Retailer 10
-
$6,484 SGD
$5,072 USD
View
B+
Retailer 11
-
$6,484 SGD
$5,072 USD
View
B+
Retailer 12
-
$6,670 SGD
£4,108 GBP
View
B+
Retailer 13
-
$6,679 SGD
$5,224 USD
View
B+
Retailer 14
-
$7,306 SGD
€5,443 EUR
View
B
Retailer 15
-
$7,482 SGD
$5,853 USD
View
B
Retailer 16
-
$7,971 SGD
ZAR 100,727 ZAR
View
B
Retailer 17
-
$10,328 SGD
£6,361 GBP
View
Most Expensive
B
NZ Jewellers
b1e3832e-6607-4c7c-8ab6-d32f401f6ec3 · Oct 30
$10,846 SGD
$8,484 USD
View
17 more retailers have this diamond
Prices start from $4,811 SGDSave up to $6,035 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
$4,811 SGD