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Radiant|Natural|GIA

6.09ct H SI1 Radiant Natural Diamond

EX • H/SI1 • GIA 2239155191

Certificate GIA 2239155191

Diamond specifications and retailer prices

From $218,768 AUD
$153,317 USD
As of November 2, 2026
Save $50,794 AUD (19%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $269,562 AUD at 77 Diamonds · As of October 29, 2026
View at 77 Diamonds

About this 6.09ct natural radiant diamond

This 6.09ct natural radiant sits in the over five carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2239155191. Listed at 7 retailers as of October 29, 2026, with prices from $218,768 to $269,562, a $50,794 spread on the same certified stone. 77 Diamonds lists it at $269,562. 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

6.09
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2239155191
Dimensions12.50 × 9.17 × 6.37 mm
L/W Ratio1.36
Top View
12.50 mm9.17 mm6.09 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2239155191
Side View
Table 69.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 69.4%

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: $269,562 AUD|Low: $216,712 AUD|High: $269,562 AUD|Avg: $239,428 AUD|+1.1%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 4$218,768 AUD
Retailer 3$228,561 AUD
Retailer 2$241,469 AUD
77 Diamonds$269,562 AUD

37 data points across 4 retailers

7 retailers$218,768 AUD to $269,562 AUD

B+
Cheapest Retailer
-
$218,768 AUD
$153,317 USD
B
Retailer 2
-
$221,036 AUD
$154,907 USD
View
B+
Retailer 3
-
$228,561 AUD
₹15,255,251 INR
View
B
Retailer 4
-
$233,248 AUD
$163,465 USD
View
B
Retailer 5
-
$241,469 AUD
$169,226 USD
View
Retailer 6
-
$241,469 AUD
$169,226 USD
View
Price last confirmed 17 days ago
Most Expensive
B
77 Diamonds
RADZXCHXKKPW · Oct 29
$269,562 AUD
£148,751 GBP
View
6 more retailers have this diamond
Prices start from $218,768 AUDSave up to $50,794 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.

B+
6.09ct Radiant
$218,768 AUD