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Round|Lab Grown|GIA

3.55ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • GIA 1488082996

Certificate GIA 1488082996

Diamond specifications and retailer prices

From $1,680 AUD
$1,180 USD
As of October 29, 2026
Save $4,811 AUD (74%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $6,491 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.55ct lab-grown round diamond

This 3.55ct lab-grown round sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1488082996. Listed at 5 retailers as of October 29, 2026, with prices from $1,680 to $6,491, a $4,811 spread on the same certified stone. Brilliant Earth lists it at $6,491. 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

3.55
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.6°
OriginLab Grown
Grading LabGIA
CertificateGIA 1488082996
Dimensions9.88 × 9.85 × 5.94 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Girdle conditionFaceted
Cert comments
This is a man-made diamond produced by CVD (Chemical Vapor Deposition) growth process and has evidence of post-growth treatments to change the color.
Key to symbols
Growth Remnant
Top View
9.88 mm9.85 mm3.55 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1488082996
Side View
Table 59.0%Crown 34°Girdle: MediumPavilion 40.6°Culet: NoneDepth 60.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $6,491 AUD|Low: $1,680 AUD|High: $6,847 AUD|Avg: $4,092 AUD|-5.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
October 30, 2026
Retailer 4$1,680 AUD
Retailer 2$2,716 AUD
Retailer 3$6,210 AUD
Brilliant Earth$6,491 AUD

15 data points across 4 retailers

5 retailers$1,680 AUD to $6,491 AUD

A
Cheapest Retailer
-
$1,680 AUD
$1,180 USD
Final sale: no returns
B+
Retailer 2
-
$2,716 AUD
£1,502 GBP
View
B
Retailer 3
-
$3,604 AUD
$2,532 USD
View
B
Retailer 4
-
$6,210 AUD
£3,435 GBP
View
Most Expensive
B
Brilliant Earth
8686683A · Oct 29
$6,491 AUD
$4,560 USD
View
4 more retailers have this diamond
Prices start from $1,680 AUDSave up to $4,811 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
3.55ct Round
$1,680 AUD