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Round|Natural|GIA

3.18ct I SI1 Round Natural Diamond

ID • I/SI1 • GIA 32988

Certificate GIA 32988

Diamond specifications and retailer prices

From $43,746 AUD
$30,729 USD
As of October 31, 2026
Save $3,451 AUD (7%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $47,197 AUD at DreamStone · As of October 31, 2026
View at DreamStone

About this 3.18ct natural round diamond

This 3.18ct 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 32988. Listed at 2 retailers as of October 31, 2026, with a relatively tight 8% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

3.18
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 32988
Dimensions9.29 × 9.35 mm
L/W Ratio1.01
Top View
9.29 mm9.35 mm3.18 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 32988
Side View
Table 57.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 62.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 31
Current: $47,197 AUD|Low: $43,337 AUD|High: $47,197 AUD|Avg: $45,369 AUD
DreamStone
Retailer 2
September 23, 2026
Retailer 2$43,746 AUD
DreamStone$47,197 AUD

2 data points across 2 retailers

2 retailers$43,746 AUD to $47,197 AUD

B+
Cheapest Retailer
-
$43,746 AUD
$30,729 USD
Most Expensive
B+
DreamStone
636c1d7876315c1dde5ae4a0 · Oct 31
$47,197 AUD
$33,153 USD
View
1 more retailer has this diamond
Prices start from $43,746 AUDSave up to $3,451 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+
3.18ct Round
$43,746 AUD