Radiant|Lab Grown|IGI

1.01ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG778628708

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG778628708

Diamond specifications and retailer prices

From $277 NZD
$156 USD
As of October 30, 2026
Save $1,593 NZD (85%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $1,869 NZD at Reve Diamonds · As of November 1, 2026
View at Reve Diamonds

About this 1.01ct lab-grown radiant diamond

This 1.01ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG778628708 or 778628708. Listed at 21 retailers as of October 30, 2026, with prices from $277 to $1,869, a $1,593 spread on the same certified stone. Reve Diamonds lists it at $1,869. 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

1.01
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle27.3°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778628708
Dimensions6.24 × 4.97 × 3.55 mm
L/W Ratio1.26
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.24 mm4.97 mm1.01 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778628708
Side View
Table 69.0%Crown 27.3°Girdle: STK-THKPavilion 37.1°Culet: NoneDepth 71.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $602 NZD|Low: $174 NZD|High: $1,625 NZD|Avg: $629 NZD|+4.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 5$174 NZD
Retailer 12$277 NZD
Retailer 3$309 NZD
Retailer 10$344 NZD
Retailer 13$344 NZD
Retailer 4$465 NZD
Retailer 7$596 NZD
Retailer 1$602 NZD
Retailer 9$652 NZD
Retailer 2$775 NZD
Retailer 11$885 NZD
Retailer 8$1,153 NZD
Retailer 6$1,607 NZD

42 data points across 13 retailers

21 retailers$277 NZD to $1,869 NZD

A
Cheapest Retailer
-
$277 NZD
$156 USD
Retailer 2
-
$277 NZD
$156 USD
View
Price last confirmed 24 days ago
Retailer 3
-
$277 NZD
$156 USD
View
Price last confirmed 16 days ago
Retailer 4
-
$277 NZD
$156 USD
View
Price last confirmed 11 days ago
A
Retailer 5
-
$309 NZD
$174 USD
View
Final sale: no returns
Retailer 6
-
$321 NZD
$181 USD
View
Price last confirmed 8 days ago
Retailer 7
-
$339 NZD
$191 USD
View
Price last confirmed 38 days ago
Retailer 8
-
$344 NZD
$194 USD
View
Price last confirmed 8 days ago
Retailer 9
-
$344 NZD
$194 USD
View
Price last confirmed 30 days ago
B+
Retailer 10
-
$465 NZD
$262 USD
View
A
Retailer 11
-
$573 NZD
$323 USD
View
A
Retailer 12
-
$596 NZD
€320 EUR
View
A
Retailer 13
-
$602 NZD
£267 GBP
View
A
Retailer 14
-
$652 NZD
£290 GBP
View
B+
Retailer 15
-
$775 NZD
$437 USD
View
B+
Retailer 16
-
$885 NZD
$499 USD
View
Retailer 17
-
$1,104 NZD
$622 USD
View
Price last confirmed 32 days ago
B
Retailer 18
-
$1,153 NZD
$650 USD
View
B
Retailer 19
-
$1,202 NZD
$677 USD
View
B
Retailer 20
-
$1,607 NZD
£713 GBP
View
Most Expensive
B
Reve Diamonds
8613479D5 · Nov 1
$1,869 NZD
$1,054 USD
View
20 more retailers have this diamond
Prices start from $277 NZDSave up to $1,593 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.

A
1.01ct Radiant
$277 NZD