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Round|Natural|GIA

1.51ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 5181599972

Certificate GIA 5181599972

Diamond specifications and retailer prices

From $13,225 SGD
$10,345 USD
As of November 1, 2026
Save $13,941 SGD (51%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $27,166 SGD at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

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 5181599972. Listed at 20 retailers as of October 31, 2026, with prices from $13,225 to $27,166, a $13,941 spread on the same certified stone. Diamond Quarter lists it at $27,166. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5181599972
Dimensions7.40 × 7.37 × 4.50 mm
L/W Ratio1.00
Top View
7.40 mm7.37 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5181599972
Side View
Table 59.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 60.9%

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: $16,046 SGD|Low: $12,449 SGD|High: $24,898 SGD|Avg: $17,040 SGD|-4.8%
Retailer 1
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
Retailer 20
November 2, 2026
Retailer 16$13,225 SGD
Retailer 13$13,625 SGD
Retailer 10$13,860 SGD
Retailer 3$14,183 SGD
Retailer 11$14,721 SGD
Retailer 6$14,939 SGD
Retailer 19$14,939 SGD
Retailer 1$16,046 SGD
Retailer 8$16,183 SGD
Retailer 15$16,254 SGD
Retailer 2$16,433 SGD
Retailer 7$17,290 SGD
Retailer 5$17,322 SGD
Retailer 17$17,322 SGD
Retailer 20$17,898 SGD
Retailer 18$17,956 SGD
Retailer 4$18,674 SGD
Retailer 14$21,947 SGD
Retailer 12$23,331 SGD
Retailer 9$24,898 SGD

44 data points across 20 retailers

20 retailers$13,225 SGD to $27,166 SGD

B+
Cheapest Retailer
-
$13,225 SGD
$10,345 USD
B+
Retailer 2
-
$13,625 SGD
$10,658 USD
View
B
Retailer 3
-
$13,860 SGD
$10,842 USD
View
B
Retailer 4
-
$14,183 SGD
CA$15,408 CAD
View
B
Retailer 5
-
$14,721 SGD
$11,515 USD
View
B
Retailer 6
-
$14,939 SGD
$11,686 USD
View
B
Retailer 7
-
$14,939 SGD
$11,686 USD
View
Final sale: no returns
B
Retailer 8
-
$16,046 SGD
£9,883 GBP
View
B
Retailer 9
-
$16,183 SGD
$12,659 USD
View
Retailer 10
-
$16,254 SGD
A$19,560 AUD
View
Price last confirmed 9 days ago
B
Retailer 11
-
$16,433 SGD
$12,854 USD
View
B
Retailer 12
-
$17,290 SGD
$13,525 USD
View
B
Retailer 13
-
$17,322 SGD
$13,550 USD
View
B
Retailer 14
-
$17,322 SGD
$13,550 USD
View
B
Retailer 15
-
$17,898 SGD
$14,000 USD
View
B
Retailer 16
-
$18,674 SGD
$14,607 USD
View
B
Retailer 17
-
$21,947 SGD
ZAR 277,346 ZAR
View
B
Retailer 18
-
$23,331 SGD
£14,370 GBP
View
B
Retailer 19
-
$24,898 SGD
$19,476 USD
View
Most Expensive
B
Diamond Quarter
1.51SI1G517287D1N · Oct 31
$27,166 SGD
£16,732 GBP
View
19 more retailers have this diamond
Prices start from $13,225 SGDSave up to $13,941 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
$13,225 SGD