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Emerald|Lab Grown|GIA

3.18ct E SI1 Emerald Lab Grown Diamond

EX • E/SI1

Diamond specifications and retailer prices

From $1,726 AUD
£954 GBP
As of October 30, 2026
Save $2,337 AUD (58%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $4,063 AUD at Blue Nile · As of October 29, 2026
View at Blue Nile

About this 3.18ct lab-grown emerald diamond

This 3.18ct lab-grown emerald sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 2 retailers as of October 29, 2026, with prices from $1,726 to $4,063, a $2,337 spread on the same certified stone. Blue Nile lists it at $4,063. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
Dimensions10.02 × 6.95 × 0.00 mm
L/W Ratio1.44
Top View
10.02 mm6.95 mm3.18 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 63.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.1%

Caratlytics Score

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

Last verified: Oct 30
Current: $4,063 AUD|Low: $985 AUD|High: $4,514 AUD|Avg: $2,325 AUD
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 3$985 AUD
Retailer 5$1,118 AUD
Retailer 7$1,301 AUD
Retailer 2$1,726 AUD
Retailer 6$3,577 AUD
Retailer 4$3,696 AUD
Blue Nile$4,063 AUD

21 data points across 7 retailers

2 retailers$1,726 AUD to $4,063 AUD

B+
Cheapest Retailer
-
$1,726 AUD
£954 GBP
Most Expensive
B
Blue Nile
22372834 · Oct 29
$4,063 AUD
$2,854 USD
View
1 more retailer has this diamond
Prices start from $1,726 AUDSave up to $2,337 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 Emerald
$1,726 AUD