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Round|Natural|GIA

5.18ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 2151963685

Certificate GIA 2151963685

Diamond specifications and retailer prices

From $201,953 NZD
₹10,821,803 INR
As of November 2, 2026
Save $62,283 NZD (24%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $264,236 NZD at Yorxs · As of November 1, 2026
View at Yorxs

About this 5.18ct natural round diamond

This 5.18ct natural round sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2151963685. Listed at 4 retailers as of November 1, 2026, with prices from $201,953 to $264,236, a $62,283 spread on the same certified stone. Yorxs lists it at $264,236. 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

5.18
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2151963685
Dimensions11.00 × 11.03 × 6.89 mm
L/W Ratio1.00
Top View
11.00 mm11.03 mm5.18 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2151963685
Side View
Table 58.0%CrownGirdle: Slightly ThickPavilionCulet: 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 2
Current: $201,953 NZD|Low: $201,546 NZD|High: $265,415 NZD|Avg: $224,628 NZD|-1.1%
Retailer 1
Retailer 2
Retailer 3
Yorxs
November 2, 2026
Retailer 1$201,953 NZD
Retailer 2$211,439 NZD
Retailer 3$220,568 NZD
Yorxs$264,236 NZD

45 data points across 4 retailers

4 retailers$201,953 NZD to $264,236 NZD

B+
Cheapest Retailer
-
$201,953 NZD
₹10,821,803 INR
B+
Retailer 2
-
$211,439 NZD
£93,674 GBP
View
B+
Retailer 3
-
$220,568 NZD
$124,103 USD
View
Final sale: no returns
Most Expensive
B
Yorxs
M06475 · Nov 1
$264,236 NZD
€141,593 EUR
View
3 more retailers have this diamond
Prices start from $201,953 NZDSave up to $62,283 NZD

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+
5.18ct Round
$201,953 NZD