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Emerald|Lab Grown|GIA

3.15ct E SI1 Emerald Lab Grown Diamond

EX • E/SI1

Diamond specifications and retailer prices

From £902 GBP
As of October 30, 2026
Save £1,222 GBP (58%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £2,124 GBP at Blue Nile · As of October 29, 2026
View at Blue Nile

About this 3.15ct lab-grown emerald diamond

This 3.15ct 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 £902 to £2,124, a £1,222 spread on the same certified stone. Blue Nile lists it at £2,124. 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

3.15
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
Dimensions9.87 × 6.87 × 0.00 mm
L/W Ratio1.44
Top View
9.87 mm6.87 mm3.15 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 67.6%

Caratlytics Score

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

Last verified: Oct 30
Current: £2,124 GBP|Low: £515 GBP|High: £2,360 GBP|Avg: £1,215 GBP
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 3£515 GBP
Retailer 5£583 GBP
Retailer 7£680 GBP
Retailer 2£902 GBP
Retailer 6£1,869 GBP
Retailer 4£1,931 GBP
Blue Nile£2,124 GBP

21 data points across 7 retailers

2 retailers£902 GBP to £2,124 GBP

B+
Cheapest Retailer
-
£902 GBP
Most Expensive
B
Blue Nile
21642729 · Oct 29
£2,124 GBP
$2,829 USD
View
1 more retailer has this diamond
Prices start from £902 GBPSave up to £1,222 GBP

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+
3.15ct Emerald
£902 GBP