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Round|Lab Grown|GIA

1.78ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • GIA 6472210025

Certificate GIA 6472210025

Diamond specifications and retailer prices

From £879 GBP
$1,171 USD
As of October 28, 2026
Save £242 GBP (22%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,122 GBP at GemTrove · As of October 29, 2026
View at GemTrove

About this 1.78ct lab-grown round diamond

This 1.78ct lab-grown round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6472210025. Listed at 2 retailers as of October 28, 2026, with prices from £879 to £1,122, a £242 spread on the same certified stone. GemTrove lists it at £1,122. 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

1.78
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.8°
OriginLab Grown
Grading LabGIA
CertificateGIA 6472210025
Dimensions7.80 × 7.76 × 4.79 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.80 mm7.76 mm1.78 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6472210025
Side View
Table 57.0%Crown 35°Girdle: ThickPavilion 40.8°Culet: NoneDepth 61.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: £1,122 GBP|Low: £845 GBP|High: £2,268 GBP|Avg: £1,294 GBP
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
September 9, 2026
Retailer 7£845 GBP
Retailer 2£879 GBP
Retailer 5£946 GBP
Retailer 6£1,020 GBP
GemTrove£1,122 GBP
Retailer 4£1,180 GBP
Retailer 3£2,248 GBP

53 data points across 7 retailers

2 retailers£879 GBP to £1,122 GBP

B
Cheapest Retailer
-
£879 GBP
$1,171 USD
Most Expensive
B+
GemTrove
GT-L-01020074-98 · Oct 29
£1,122 GBP
A$2,298 AUD
View
1 more retailer has this diamond
Prices start from £879 GBPSave up to £242 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+
1.78ct Round
£879 GBP