Emerald|Lab Grown|GCAL

1.70ct I VS1 Emerald Lab Grown Diamond

VG • I/VS1 • GCAL 312222030

Shape and cutting style on the report: Emerald step

Certificate GCAL 312222030

Diamond specifications and retailer prices

From £278 GBP
$372 USD
As of October 24, 2026
Save £83 GBP (23%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,286 GBP at MOH London · As of October 21, 2026
View at MOH London

About this 1.7ct lab-grown emerald diamond

This 1.7ct lab-grown emerald sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by GCAL 312222030. Listed at 7 retailers as of October 23, 2026, with a 30% 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

1.70
Carat
I
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle48°
Pavilion angle57.8°
OriginLab Grown
Grading LabGCAL
CertificateGCAL 312222030
Dimensions8.17 × 5.64 × 3.81 mm
L/W Ratio1.45
Culet sizeNone
Top View
8.17 mm5.64 mm1.70 ctI / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGCAL 312222030
Side View
Table 65.0%Crown 48°GirdlePavilion 57.8°Culet: NoneDepth 67.7%

Caratlytics Score

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

Price History

Last verified: Oct 24
Current: £1,286 GBP|Low: £230 GBP|High: £1,295 GBP|Avg: £616 GBP|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 18, 2026
Retailer 3£240 GBP
Retailer 6£278 GBP
Retailer 7£360 GBP
Retailer 4£481 GBP
Retailer 2£870 GBP
Retailer 5£1,053 GBP
MOH London£1,286 GBP

12 data points across 7 retailers

7 retailers£278 GBP to £360 GBP

Retailer 1
-
£240 GBP
$321 USD
Price last confirmed 7 days ago
A
Retailer 2
-
£278 GBP
$372 USD
View
B+
Retailer 3
-
£360 GBP
$483 USD
View
Retailer 4
-
£481 GBP
$644 USD
View
Price last confirmed 7 days ago
Retailer 5
-
£870 GBP
$1,166 USD
View
Price last confirmed 7 days ago
Retailer 6
-
£1,053 GBP
$1,411 USD
View
Price last confirmed 8 days ago
Most Expensive
MOH London
312222030 · Oct 21
£1,286 GBP
View
Price last confirmed 9 days ago
6 more retailers have this diamond
Prices start from £278 GBPSave up to £83 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.

A
1.70ct Emerald
£278 GBP