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Round|Natural|GIA

1.51ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 7553158400

Certificate GIA 7553158400

Diamond specifications and retailer prices

From $9,406 SGD
$7,358 USD
As of November 1, 2026
Save $11,345 SGD (55%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $20,751 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7553158400. Listed at 24 retailers as of October 30, 2026, with prices from $9,406 to $20,751, a $11,345 spread on the same certified stone. NZ Jewellers lists it at $20,751. 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 7553158400
Dimensions7.31 × 7.28 × 4.56 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
7.31 mm7.28 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 7553158400
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 40.6°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: $20,751 SGD|Low: $9,047 SGD|High: $20,751 SGD|Avg: $13,166 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 8$9,952 SGD
Retailer 3$10,375 SGD
Retailer 10$11,240 SGD
Retailer 2$11,411 SGD
Retailer 9$11,412 SGD
Retailer 7$11,462 SGD
Retailer 4$12,838 SGD
Retailer 11$12,969 SGD
Retailer 6$15,242 SGD
Retailer 5$17,291 SGD
NZ Jewellers$20,751 SGD

43 data points across 11 retailers

24 retailers$9,406 SGD to $20,751 SGD

B+
Cheapest Retailer
-
$9,406 SGD
$7,358 USD
B+
Retailer 2
-
$9,691 SGD
A$11,662 AUD
View
B+
Retailer 3
-
$9,715 SGD
$7,599 USD
View
B+
Retailer 4
-
$9,952 SGD
$7,785 USD
View
Final sale: no returns
B+
Retailer 5
-
$9,991 SGD
$7,816 USD
View
B+
Retailer 6
-
$10,196 SGD
CA$11,077 CAD
View
B+
Retailer 7
-
$10,323 SGD
$8,075 USD
View
B+
Retailer 8
-
$10,375 SGD
$8,116 USD
View
B+
Retailer 9
-
$11,240 SGD
$8,792 USD
View
B+
Retailer 10
-
$11,411 SGD
£7,028 GBP
View
B
Retailer 11
-
$11,412 SGD
$8,927 USD
View
Retailer 12
-
$11,462 SGD
A$13,794 AUD
View
Price last confirmed 9 days ago
B
Retailer 13
-
$11,513 SGD
$9,006 USD
View
B+
Retailer 14
-
$11,924 SGD
$9,327 USD
View
B+
Retailer 15
-
$12,298 SGD
$9,620 USD
View
B+
Retailer 16
-
$12,298 SGD
$9,620 USD
View
B
Retailer 17
-
$12,707 SGD
$9,940 USD
View
B+
Retailer 18
-
$12,838 SGD
€9,564 EUR
View
B
Retailer 19
-
$12,969 SGD
$10,145 USD
View
B
Retailer 20
-
$13,239 SGD
$10,356 USD
View
Retailer 21
-
$13,660 SGD
$10,685 USD
View
Price last confirmed 10 days ago
B
Retailer 22
-
$15,242 SGD
ZAR 192,615 ZAR
View
B
Retailer 23
-
$17,291 SGD
£10,650 GBP
View
Most Expensive
B
NZ Jewellers
eb3c1a88-f45c-4c03-a97a-4d4757043811 · Oct 30
$20,751 SGD
$16,232 USD
View
23 more retailers have this diamond
Prices start from $9,406 SGDSave up to $11,345 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
$9,406 SGD