CaratHunter
Plans
Round|Lab Grown|DF

1.78ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • DF 620415433

Shape and cutting style on the report: Round brilliant

Certificate DF 620415433

Diamond specifications and retailer prices

From £578 GBP
As of October 28, 2026
Save £1,097 GBP (65%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,675 GBP at VRAI · As of October 28, 2026
View at VRAI

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 DF 620415433. Listed at 2 retailers as of October 28, 2026, with prices from £578 to £1,675, a £1,097 spread on the same certified stone. VRAI lists it at £1,675. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle41.1°
OriginLab Grown
Grading LabDF
CertificateDF 620415433
Dimensions7.84 × 7.82 × 4.74 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.84 mm7.82 mm1.78 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateDF 620415433
Side View
Table 59.0%Crown 33.2°Girdle: MediumPavilion 41.1°Culet: NoneDepth 60.6%

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: Oct 28
Current: £1,262 GBP|Low: £578 GBP|High: £1,675 GBP|Avg: £925 GBP|-7.2%
Retailer 1
Retailer 2
VRAI
September 14, 2026
Retailer 2£578 GBP
Retailer 1£1,262 GBP
VRAI£1,675 GBP

14 data points across 3 retailers

2 retailers£578 GBP to £1,675 GBP

B+
Cheapest Retailer
-
£578 GBP
Most Expensive
C
VRAI
F547559 · Oct 28
£1,675 GBP
$2,230 USD
View
1 more retailer has this diamond
Prices start from £578 GBPSave up to £1,097 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
£578 GBP