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3.86ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6355040137

Shape and cutting style on the report: Round brilliant

Certificate GIA 6355040137

Diamond specifications and retailer prices

From $65,898 AUD
$46,290 USD
As of November 1, 2026
Save $33,530 AUD (34%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $99,428 AUD at Cape Diamonds · As of October 27, 2026
View at Cape Diamonds

About this 3.86ct natural round diamond

This 3.86ct natural round sits in the three to five carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6355040137. Listed at 9 retailers as of October 27, 2026, with prices from $65,898 to $99,428, a $33,530 spread on the same certified stone. Cape Diamonds lists it at $99,428. 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

3.86
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6355040137
Dimensions9.97 × 9.92 × 6.23 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
9.97 mm9.92 mm3.86 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6355040137
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.6%

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: $99,428 AUD|Low: $65,898 AUD|High: $99,428 AUD|Avg: $78,694 AUD|+1.6%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 6$65,898 AUD
Retailer 7$67,194 AUD
Retailer 2$69,768 AUD
Retailer 5$74,779 AUD
Retailer 4$83,516 AUD
Retailer 3$90,328 AUD
Cape Diamonds$99,428 AUD

43 data points across 7 retailers

9 retailers$65,898 AUD to $99,428 AUD

B+
Cheapest Retailer
-
$65,898 AUD
$46,290 USD
B+
Retailer 2
-
$67,194 AUD
$47,200 USD
View
B+
Retailer 3
-
$69,768 AUD
₹4,667,443 INR
View
B+
Retailer 4
-
$70,665 AUD
$49,638 USD
View
B
Retailer 5
-
$74,779 AUD
$52,528 USD
View
Retailer 6
-
$74,779 AUD
$52,528 USD
View
Price last confirmed 18 days ago
B
Retailer 7
-
$83,516 AUD
£46,193 GBP
View
B
Retailer 8
-
$90,328 AUD
€60,429 EUR
View
Most Expensive
B
Cape Diamonds
cert_6355040137 · Oct 27
$99,428 AUD
ZAR 1,128,319 ZAR
View
8 more retailers have this diamond
Prices start from $65,898 AUDSave up to $33,530 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+
3.86ct Round
$65,898 AUD