Emerald|Lab Grown|GCAL

0.55ct E SI2 Emerald Lab Grown Diamond

GD • E/SI2 • GCAL 312450087

Certificate GCAL 312450087

Diamond specifications and retailer prices

From $154 USD
As of November 4, 2026
Save $856 USD (85%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,378 USD at MOH London · As of November 2, 2026
View at MOH London

About this 0.55ct lab-grown emerald diamond

This 0.55ct lab-grown emerald sits in the half to three-quarter carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade and certified by GCAL 312450087. Listed at 8 retailers as of November 4, 2026, with a 556% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.55
Carat
E
Color
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishGood
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabGCAL
CertificateGCAL 312450087
Dimensions7.19 × 4.57 × 2.83 mm
L/W Ratio1.57
Top View
7.19 mm4.57 mm0.55 ctE / SI2
OriginLab Grown
CutGood
PolishGood
SymmetryVery Good
FluorescenceNone
CertificateGCAL 312450087
Side View
Table 59.0%CrownGirdle: ThickPavilionCulet: NoneDepth 61.9%

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 4
Current: $1,378 USD|Low: $154 USD|High: $1,430 USD|Avg: $521 USD|-3.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 4, 2026
Retailer 8$154 USD
Retailer 4$160 USD
Retailer 9$213 USD
Retailer 10$265 USD
Retailer 7$286 USD
Retailer 3$350 USD
Retailer 2$410 USD
Retailer 5$410 USD
Retailer 6$1,010 USD
MOH London$1,378 USD

19 data points across 10 retailers

8 retailers$154 USD to $1,010 USD

B
Cheapest Retailer
-
$154 USD
B+
Retailer 2
-
$160 USD
View
B
Retailer 3
-
$286 USD
View
B
Retailer 4
-
$350 USD
View
B
Retailer 5
-
$410 USD
View
B
Retailer 6
-
$410 USD
View
C
Retailer 7
-
$1,010 USD
View
Most Expensive
MOH London
312450087 · Nov 2
$1,378 USD
£1,085 GBP
View
Price under review
7 more retailers have this diamond
Prices start from $154 USDSave up to $856 USD

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+
0.55ct Emerald
$154 USD