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Round|Lab Grown|GIA

0.40ct H SI1 Round Lab Grown Diamond

VG • H/SI1 • GIA 2557262584

Certificate GIA 2557262584

Diamond specifications and retailer prices

From $1,127 NZD
€605 EUR
As of November 1, 2026
Save $283 NZD (20%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $3,481 NZD at MOH London · As of November 1, 2026
View at MOH London

About this 0.4ct lab-grown round diamond

This 0.4ct lab-grown round sits in the sub-half-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 2557262584. Listed at 3 retailers as of November 1, 2026, with a 25% 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

0.40
Carat
H
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 2557262584
Dimensions4.56 × 4.61 × 2.96 mm
L/W Ratio1.01
Culet sizeNone
Top View
4.56 mm4.61 mm0.40 ctH / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557262584
Side View
Table 55.0%CrownGirdlePavilionCulet: NoneDepth 64.4%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $3,481 NZD|Low: $1,105 NZD|High: $3,635 NZD|Avg: $1,782 NZD|-2.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 2$1,127 NZD
Retailer 4$1,215 NZD
Retailer 3$1,411 NZD
MOH London$3,481 NZD

32 data points across 4 retailers

3 retailers$1,127 NZD to $1,411 NZD

B
Cheapest Retailer
-
$1,127 NZD
€605 EUR
B
Retailer 2
-
$1,411 NZD
$795 USD
View
Most Expensive
MOH London
2557262584 · Nov 1
$3,481 NZD
£1,545 GBP
View
Price under review
2 more retailers have this diamond
Prices start from $1,127 NZDSave up to $283 NZD

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
0.40ct Round
$1,127 NZD