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Round|Natural|GIA

5.15ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 7531243741

Certificate GIA 7531243741

Diamond specifications and retailer prices

From $74,924 SGD
As of November 4, 2026
Save $47,228 SGD (39%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $158,194 SGD at Aurelinne · As of September 19, 2026
View at Aurelinne

About this 5.15ct natural round diamond

This 5.15ct natural round sits in the over five carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7531243741. Listed at 17 retailers as of November 4, 2026, with a 63% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

5.15
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 7531243741
Dimensions11.18 × 11.12 × 6.77 mm
L/W Ratio1.01
Star length45%
Culet sizeNone
Key to symbols
Cloud, Crystal, Needle
Top View
11.18 mm11.12 mm5.15 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7531243741
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 60.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $77,959 SGD|Low: $74,924 SGD|High: $140,617 SGD|Avg: $93,524 SGD|+1.2%
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
November 6, 2026
Retailer 8$74,924 SGD
Retailer 12$75,345 SGD
Retailer 1$77,959 SGD
Retailer 13$78,747 SGD
Retailer 4$82,367 SGD
Retailer 9$83,249 SGD
Retailer 10$83,249 SGD
Retailer 3$84,473 SGD
Retailer 11$88,051 SGD
Retailer 2$90,875 SGD
Retailer 6$94,414 SGD
Retailer 7$122,152 SGD
Retailer 5$129,953 SGD

32 data points across 13 retailers

17 retailers$74,924 SGD to $122,152 SGD

A
Cheapest Retailer
-
$74,924 SGD
A
Retailer 2
-
$75,345 SGD
View
A
Retailer 3
-
$77,959 SGD
View
Retailer 4
-
$79,718 SGD
View
Price last confirmed 40 days ago
B+
Retailer 5
-
$81,692 SGD
View
B+
Retailer 6
-
$83,249 SGD
View
B+
Retailer 7
-
$83,249 SGD
View
Retailer 8
-
$87,993 SGD
View
Price last confirmed 38 days ago
B+
Retailer 9
-
$88,051 SGD
View
Retailer 10
-
$90,875 SGD
View
Price last confirmed 36 days ago
Retailer 11
-
$91,513 SGD
View
Price last confirmed 36 days ago
B+
Retailer 12
-
$94,414 SGD
View
Retailer 13
-
$95,032 SGD
View
Price last confirmed 38 days ago
B
Retailer 14
-
$122,152 SGD
View
Retailer 15
-
$132,700 SGD
View
Price last confirmed 50 days ago
Retailer 16
-
$152,335 SGD
View
Price last confirmed 53 days ago
Most Expensive
Aurelinne
ca0647ac-7375-4d61-b4d2-c7d77e0a9b7a · Sep 19
$158,194 SGD
$123,850 USD
View
Price last confirmed 48 days ago
16 more retailers have this diamond
Prices start from $74,924 SGDSave up to $47,228 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.

A
5.15ct Round
$74,924 SGD