CaratHunter
Plans
Round|Natural|GIA

5.15ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 7531243741

Certificate GIA 7531243741

Diamond specifications and retailer prices

From $83,793 AUD
As of November 4, 2026
Save $52,819 AUD (39%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $176,920 AUD 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $87,187 AUD|Low: $83,793 AUD|High: $157,262 AUD|Avg: $104,595 AUD|+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$83,793 AUD
Retailer 12$84,264 AUD
Retailer 1$87,187 AUD
Retailer 13$88,068 AUD
Retailer 4$92,117 AUD
Retailer 9$93,104 AUD
Retailer 10$93,104 AUD
Retailer 3$94,472 AUD
Retailer 11$98,474 AUD
Retailer 2$101,632 AUD
Retailer 6$105,590 AUD
Retailer 7$136,612 AUD
Retailer 5$145,336 AUD

32 data points across 13 retailers

17 retailers$83,793 AUD to $136,612 AUD

A
Cheapest Retailer
-
$83,793 AUD
A
Retailer 2
-
$84,264 AUD
View
A
Retailer 3
-
$87,187 AUD
View
Retailer 4
-
$89,154 AUD
View
Price last confirmed 40 days ago
B+
Retailer 5
-
$91,363 AUD
View
B+
Retailer 6
-
$93,104 AUD
View
B+
Retailer 7
-
$93,104 AUD
View
Retailer 8
-
$98,409 AUD
View
Price last confirmed 38 days ago
B+
Retailer 9
-
$98,474 AUD
View
Retailer 10
-
$101,632 AUD
View
Price last confirmed 36 days ago
Retailer 11
-
$102,346 AUD
View
Price last confirmed 36 days ago
B+
Retailer 12
-
$105,590 AUD
View
Retailer 13
-
$106,282 AUD
View
Price last confirmed 38 days ago
B
Retailer 14
-
$136,612 AUD
View
Retailer 15
-
$148,408 AUD
View
Price last confirmed 50 days ago
Retailer 16
-
$170,367 AUD
View
Price last confirmed 53 days ago
Most Expensive
Aurelinne
ca0647ac-7375-4d61-b4d2-c7d77e0a9b7a · Sep 19
$176,920 AUD
$123,850 USD
View
Price last confirmed 48 days ago
16 more retailers have this diamond
Prices start from $83,793 AUDSave up to $52,819 AUD

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
$83,793 AUD